question stringlengths 1 5.01k | choices listlengths 4 4 | answer stringclasses 4
values | support stringlengths 0 3.68k | source stringclasses 3
values |
|---|---|---|---|---|
On Tuesday, Apple' CEO, Tim Cook, announced the Apple Watch. It is like a normal watch, but it can do all the things a mobile phone does -- and more. At US $349, the Apple Watch is expensive. _ However, it seems that it will open another door for the use of computers. The watch taps you whenever a new message comes in.... | [
"Beautiful.",
"Exciting.",
"normal",
"Expensive."
] | B | MMLU_train | |
M is a certain set of numbers with an average (arithmetic mean) of 10 and a standard deviation of 1. Q is a subset of M consisting of 5 terms. Exactly 80% of the numbers in Q are located within 2 standard deviations from the average of M. Which of the following could Q be? | [
"{3, 4, 5, 10, 14}",
"{5, 8, 9, 10, 12}",
"{3, 6, 7, 10, 12}",
"{1, 5, 7, 10, 12}"
] | B | Exactly 80% of the numbers in Q, so 4 out of 5 numbers are from 10 - 2*{SD} = 8 to 10 + 2*{SD} = 12.
A. {3, 4,5, 10, 14} --> only 1 number is in this range. Discard.
B. {3,6, 7, 10, 12} --> only 2 numbers are in this range. Discard.
C. {3,5, 5, 10, 16} --> only 1 number is in this range. Discard.
D. {1,5, 7, 10, 12} --... | AquaRat_train |
If Peter reads at a constant rate of 1 pages every 5 minutes, how many seconds will it take him to read N pages? | [
"300",
"24N",
"150",
"5/2*N"
] | A | Peter would read 1 page in 5/1 minutes
Peter would read N page in (5/1)*N min i.e. (5/2)*N*60 Seconds = 300N Seconds.
Option A is the correct Answer. | AquaRat_train |
Have you ever looked toward the sky on a fall day and witnessed a group of migrating birds? If so, you probably noted the V-shaped formation of the birds or the birds flying in a ball-like formation. Why do birds fly this way? Many theories have been developed to explain the formation patterns of different types of bir... | [
"move faster than cyclists",
"prefer to fly in a V formation",
"are smarter than other animals",
"play different roles in a formation"
] | D | MMLU_train | |
A cycle is bought for Rs.900 and sold for Rs.1080, find the gain percent? | [
"22%",
"90%",
"27%",
"20%"
] | D | 900 ---- 180
100 ---- ? => 20%
Answer: B | AquaRat_train |
Ashleigh Fraser and Leah Guskjolen, both 18, wondered why they would not be allowed to wear nail polish or artificial nails during their training to become certified nursing assistants. But when they asked, the only response which they got was that "rules are rules." Not satisfied, the teens decided to explore the is... | [
"has to quit her fake nails in order to be a nurse",
"needn't change much for her dream career",
"feels honored to be qualified for being a surgeon",
"wants to be a doctor because she dislikes nail polish"
] | B | MMLU_train | |
What type of mammal gives birth to young that need to develop further in the mother's pouch after birth? | [
"humans",
"aborigines",
"marsupials",
"whales"
] | C | Marsupials give birth to a tiny, immature embryo. The embryo then continues to grow and develop in a pouch on the mother’s belly. This is less risky for the mother. However, the embryo is fragile, so it may be less likely to survive than the fetus of a placental mammal. | SCiQ_train |
For hundreds Of years, scientists have been trying to answer what things have an effect on people's emotions . How you feel is controlled by many things. Your emotions can be affected by your personality, by the actions of others and by events around you. Perhaps you don't know your emotions can be influenced by the w... | [
"It is a kind of artificial chemical.",
"It makes us worried by affecting our brains.",
"It is needed by us all to keep fit.",
"It is in the sunlight."
] | C | MMLU_train | |
As x increases from 161 to 162, which of the following increases? I) x−1/x II) 17−1/x III) (17+x)/x | [
"II,III only",
"I only",
"II only",
"I,II only"
] | D | On Increasing the value of x from 161 to 162
I) x−1/x will increase as 1/x will be very small and x will increase by 1 unit
II) 17−1/x Will Increase as the value of 1/x will decrease thereby increasing the value of 17-(1/x)
III) (17+x)/x = (17/x)+1 will Decrease as 1/x will decrease thereby decreasing the value of (17/... | AquaRat_train |
Different forms, or allotropes, of carbon are diamond, graphite, and what? | [
"carbonite",
"fullerenes",
"vesicles",
"ligands"
] | B | Different forms, or allotropes, of carbon are diamond, graphite, and fullerenes. | SCiQ_train |
A cube of edge 7 cm is cut into cubes each of edge 1 cm. The ratio of the total surface area of one of the small cubes to that of the large cube is equal to: | [
"1:49",
"1:522",
"None",
"1:52"
] | A | Sol.
Required ratio = 6 * 1 * 1 / 6 * 7 * 7 = 1/49 = 1:49.
Answer B | AquaRat_train |
How many words can be formed using the letters of the word “DRAW”" | [
"22",
"26",
"29",
"24"
] | D | There are ‘4’ different letters of the word “DRAW”
Number of Permutations taking all the letters at a time = 4P4
4!= 24
C | AquaRat_train |
Ionic bonds are what kind of attraction between ions? | [
"kinetic",
"magnetic",
"nuclear",
"electrostatic"
] | D | Ionic bonding. Ionic bonds result from electrostatic attractions between positively and negatively charged side chains of amino acids. For example, the mutual attraction between an aspartic acid carboxylate ion and a lysine ammonium ion helps to maintain a particular folded area of a protein (part (a) of http://catalog... | SCiQ_train |
Bicycle Tour and Race A bike tour and race will be held on August 26 and 27(Sat. & Sun.) at 5:30 a.m. The riders will leave Tiananmen Square and ride the first 35 kilometers as a training leg. Then the next 55 kilometers leg, from Yanjiao to Jixian, will be the first competitive part of the tour. The riders and thei... | [
"35 kilometers",
"55 kilometers",
"90 kilometers",
"110 kilometers"
] | D | MMLU_train | |
What do we call any way that animals act, either alone or with other animals. | [
"animal communication",
"typical behavior",
"animal habits",
"animal behavior"
] | D | Animal behavior is any way that animals act, either alone or with other animals. | SCiQ_train |
If the average marks of three batches of 55, 60 and 45 students respectively is 40, 62, 58, then the average marks of all the students is | [
"54.58",
"54.6",
"53.31",
"54.48"
] | C | Explanation:
(55×40)+(60×62)+(45×58) / 55+60+45
8530 / 160=53.3
Option B | AquaRat_train |
Jennifer had $150 to spend on herself. She spent 1/5 of the money on a sandwich, 1/6 for a ticket to a museum, and 1/2 of it on a book. How much money does Jennifer have left over? | [
"$4",
"$14",
"$15",
"$20"
] | D | 1/5 x $150 = $30 for sandwich
1/6 x $150 = $25 for museum
1/2 x $150 = $75 for book
$30 + $25 + $75 = $130 spent
$150 - $130 = $20 left over
correct answer E | AquaRat_train |
How many vertebrae make up the human vertebral column? | [
"35",
"32",
"33",
"35"
] | C | Human Vertebral Column and Vertebrae. The human vertebral column consists of 33 vertebrae. Two vertebrae are shown here enlarged. | SCiQ_train |
The formula unit of sodium chloride dissociates into one sodium ion and one? | [
"electron",
"chloride ion",
"oxygen ion",
"magnesium ion"
] | B | The formula unit of sodium chloride dissociates into one sodium ion and one chloride ion. The calcium nitrate formula unit dissociates into one calcium ion and two nitrate ions. This is because of the 2+ charge of the calcium ion. Two nitrate ions, each with a 1− charge are required to make the equation balance electri... | SCiQ_train |
If the perimeter of a rectangular garden is 600 m, its length when its breadth is 100 m is? | [
"237",
"299",
"292",
"200"
] | D | 2(l + 100) = 600 => l = 200 m Answer: C | AquaRat_train |
In 1986 the book value of a certain car was 2/3 of the original price, and in 1988 its book value was 1/2 of the original purchase price. By what percent did the book value for this car decre ase from 1986 to 1988? | [
"16 2/3 %",
"75%",
"33 1/3 %",
"25 percent"
] | D | 1986; 2/3
1988; 1/2
% decrease = change/original * 100
2/3−1/2 / 2/3∗100
1/6∗3/2∗100=14∗100=25
Answer: "B" | AquaRat_train |
Nerves all have | [
"microscopic parts",
"short arms",
"viable organs",
"liver transplants"
] | A | MMLU_train | |
Bromide is present in brines, which are naturally occurring solutions of what? | [
"magnesium",
"calcium",
"salt",
"iron"
] | C | chlorine is added to an aqueous solution of bromide. iodine crystals are added to a solution of potassium bromide. Bromide is present in naturally occurring salt solutions called brines. Based on your answers, propose an effective method to remove bromide from brine. | SCiQ_train |
Mercury and lead, which was once widely used in paint and gasoline, are examples of what type of metals? | [
"alloys",
"toxic heavy metals",
"sulfuric heavy metals",
"gaseous heavy metals"
] | B | Toxic heavy metals include mercury and lead. Mercury is used in some industrial processes. It is also found in fluorescent light bulbs. Lead was once widely used in gasoline, paint, and pipes. It is still found in some products. | SCiQ_train |
Many people have never heard of Mesothelioma and are unaware of its symptoms. Although considered a rare form of cancer, each year the number of cases grows. With the prevalence of this disease on the rise, it is critical to understand why and how Mesothelioma develops and what courses of action can be taken in the eve... | [
"Terrible Mesothelioma",
"Mesothelioma is around us",
"Frequently Asked Questions About Mesothelioma",
"Mesothelioma in on the rise"
] | C | MMLU_train | |
What type of bonds form only between metals and nonmetals? | [
"ionic bonds",
"harmonic bonds",
"non-harmonic bonds",
"magnetic bonds"
] | A | Ionic bonds form only between metals and nonmetals. Metals "want" to give up electrons, and nonmetals "want" to gain electrons. Find sodium (Na) in Figure below . Sodium is an alkali metal in group 1. Like other group 1 elements, it has just one valence electron. If sodium loses that one electron, it will have a full o... | SCiQ_train |
What is the study of the vital statistics of populations and how they change over time? | [
"anthropology",
"demography",
"sociology",
"ethnography"
] | B | SCiQ_train | |
When we heard that our friend astronaut Gregory Chamitorff was going to be on board the last flight of the space shuttle Endeavour, we asked him if he would answer some questions from space. He said yes! Here are our questions and Greg's answers from space. What's the best thing about being in space? Zero-gravity is b... | [
"Frightened",
"Excited",
"Sad",
"Surprised"
] | B | MMLU_train | |
On a partly cloudy day, Derek decides to walk back from work. When it is sunny, he walks at a speed of s miles/hr (s is an integer) and when it gets cloudy, he increases his speed to (s + 1) miles/hr. If his average speed for the entire distance is 2.8 miles/hr, what fraction T of the total distance did he cover while ... | [
"1/7",
"1/6",
"1/5",
"4/5"
] | A | If s is an integer and we know that the average speed is 2.8, s must be = 2. That meanss+1= 3. This implies that the ratio of time for s=2 is 1/4 of the total time. The formula for distance/rate is D=Rt...so the distance travelled when s=2 is 2t. The distance travelled for s+1=3 is 3*4t or 12t. Therefore, total distanc... | AquaRat_train |
Unlike ionic compounds, covalent compounds do not have freely moving what? | [
"neutrons",
"atoms",
"Nuclei.",
"electrons"
] | D | Unlike ionic compounds, covalent compounds do not have freely moving electrons, so they cannot conduct electricity. | SCiQ_train |
Land plants are classified into two major groups according to the absence or presence of what tissue? | [
"disease",
"root",
"bacterial",
"vascular"
] | D | The Major Divisions of Land Plants Land plants are classified into two major groups according to the absence or presence of vascular tissue, as detailed in Figure 14.8. Plants that lack vascular tissue formed of specialized cells for the transport of water and nutrients are referred to as nonvascular plants. The bryoph... | SCiQ_train |
What is the transparent outer covering of the eye? | [
"iris",
"retina",
"pupil",
"cornea"
] | D | The cornea is the transparent outer covering of the eye. It protects the eye and also acts as a convex lens, helping to focus light that enters the eye. | SCiQ_train |
In an election only two candidates contested. A candidate secured 70% of the valid votes and won by a majority of 176 votes. Find the total number of valid votes? | [
"440",
"550",
"570",
"480"
] | A | Let the total number of valid votes be x.
70% of x = 70/100 * x = 7x/10
Number of votes secured by the other candidate = x - 7x/100 = 3x/10
Given, 7x/10 - 3x/10 = 176 => 4x/10 = 176
=> 4x = 1760 => x = 440.
ANSWER:A | AquaRat_train |
Every minute,someone is setting up an Internet company somewhere, in the worlD. Each one is searching for the one great idea that could make his web company click in a big way.And they are trying all kinds of tricks to attract people towards their websites.While some websites offer sounds,cartoons and amazing photos on... | [
"It reads the smell code and sends it to the user.",
"It blows the smell to the user with the help of a fan.",
"It rechanges the signal and lets go of the correct smell.",
"It changes the chemical composition into digital signals."
] | C | MMLU_train | |
Which gland is an extension of the hypothalamus? | [
"adrenal gland",
"pineal gland",
"posterior pituitary gland",
"salivary gland"
] | C | SCiQ_train | |
What creates a new seafloor at the mid-ocean ridge? | [
"earthquake",
"hurricane",
"glaciers",
"magma"
] | D | Magma at the mid-ocean ridge creates new seafloor. | SCiQ_train |
What are the most common roundworm parasites of people in the u. s.? | [
"hookworms",
"cutworms",
"leeches",
"pinworms"
] | D | Tiny pinworms are the most common roundworm parasites of people in the U. S. In some areas, as many as one out of three children are infected. Humans become infected when they ingest the nearly microscopic pinworm eggs. The eggs hatch and develop into adults in the host’s digestive tract. Adults lay eggs that pass out ... | SCiQ_train |
Our voice gives away a lot of information about ourselves. It can tell us our gender and age. And now, scientists say that it can also tell us our height. Scientists at Washington University, Indiana University and University of California found that listeners could accurately tell the height of speakers, just by their... | [
"change more quickly as they get older",
"can tell the height of the speaker",
"sound different when they have water in their mouth",
"can tell the speaker's gender, age and weight"
] | B | MMLU_train | |
During which phase of the Moon could a solar eclipse take place? | [
"full",
"new",
"quarter",
"crescent"
] | B | MMLU_train | |
Scientists are experimenting to develop microbes that can live off surplus electricity and CO2 to produce | [
"organic products, such as methane, acetate and butanol as economic biofuels",
"less electricity and more CO2",
"solar energy and biofuels in the laboratory",
"fewer biofuels like butanol and less CO2"
] | A | MMLU_train | |
What is an extremely severe food allergy reaction? | [
"anaphylaxis",
"lymphocytes",
"sepsis",
"apoptosis"
] | A | Food allergies occur when the immune system reacts to substances in food as though they were harmful “foreign invaders. ” Foods that are most likely to cause allergies are pictured in Figure below , and include nuts, eggs, grains and milk. Symptoms of food allergies often include vomiting and diarrhea. Symptoms of food... | SCiQ_train |
Compared to the amount of hereditary information in a human body cell, how much hereditary information is contained in a human sex cell? | [
"one-quarter the amount",
"one-half the amount",
"the same amount",
"twice the amount"
] | B | MMLU_train | |
The oil from palms has a wide variety of uses and is found in food, soaps and shampoos. An international team found a gene that made some of the trees produce more oil than others. Dr Rajinder Singh, from government agency the Malaysian Palm Oil Board, said, "The oil palm has three fruit forms: a thick-shelled type -... | [
"The more oily palms easily died of bad weather.",
"The more oily palms can change to the less oily ones.",
"They don't have enough land to grow oil palms.",
"They are unable to predict exactly what sort of fruit the trees they are planting will produce."
] | B | MMLU_train | |
A, B, C subscribe Rs. 50,000 for a business, A Subscribes Rs. 4000 more than B and B Rs. 5000 more than C. Out of a total profit of Rs. 35,000, C receives : | [
"13777",
"8400",
"14703",
"14778"
] | B | Explanation:
Let C = x. Then, B = x + 5000 and A = x + 5000 + 4000 = x + 9000.
So, x + x + 5000 + x + 9000 = 50000 <=> 3x = 36000 <=>
x = 12000.
A : B : C = 21000 : 17000 : 12000 = 21 : 17 : 12.
C's share = Rs. (35000 * 12/50 ) = Rs. 8,400.
Answer: A) | AquaRat_train |
How to Beat On-line Credit-card Thieves The Internet has led to a huge increase in credit-card fraud. Your card information could even be for sale in an illegal web site. Web sites offering cheap services should be regarded with care. On-line shoppers who enter their credit-card information may never receive the goods ... | [
"fraud on the Internet",
"computer hackers",
"illegal web site",
"shopping on line"
] | A | MMLU_train | |
What is the term for materials that have been left behind by organisms that once lived? | [
"detritis",
"skulls",
"fossils",
"bones"
] | C | Sediments are small fragments of rocks and minerals. Pebbles, sand, silt, and clay are examples of sediments. Sedimentary rocks may include fossils. Fossils are materials left behind by once-living organisms. Fossils can be pieces of the organism, like bones. They can also be traces of the organism, like footprints. | SCiQ_train |
The sum of two numbers is 40 and their product is 375. What will be the sum of their reciprocals? | [
"75/8",
"75/6",
"1/40",
"8/75"
] | D | (1/a)+(1/b)=(a+b)/ab=40/375=8/75
ANSWER:B | AquaRat_train |
Synaptic connections can change over time depending on what? | [
"age",
"activity level",
"weight",
"diet"
] | B | SCiQ_train | |
Paying a higher price than usual for a ticket to see a film in 3D is the annoyance of many a cinema-goer's life. But there may be a benefit to doing so, as a study has found that 3D films exercise the brain and improve short-term functioning in a similar way to brain-training tests. The research found that people who w... | [
"a sports newspaper",
"a biology textbook",
"a science magazine",
"a film review"
] | C | MMLU_train | |
What rigid layer surrounds the cell membrane of a plant cell? | [
"cuticle",
"cell wall",
"bark",
"epidermis"
] | B | The cell wall is a rigid layer that surrounds the cell membrane of a plant cell. It’s made mainly of the complex carbohydrate called cellulose. The cell wall supports and protects the cell. The cell wall isn’t solid like a brick wall. It has tiny holes in it called pores. The pores let water, nutrients, and other subst... | SCiQ_train |
How many trailing Zeroes does 49! + 50! have? | [
"12",
"9",
"11",
"10"
] | D | 49!+50!= 51*49!
No of trailing 0's = no of 5*2
no of 2's = 49/2+49/4+49/8+49/16+49/32 = D
no of 5's = 49/5+49/25=10=P
now since
P < D
no of trailing 0's = 10
ANSWER:B | AquaRat_train |
Ana climbs up stairs 20 floors building and back. She takes the exact same route both ways. On the trip up she climbs an average speed of 2 steps per second. On the trip back she climbs down at an average speed of 4 steps per second. What is her approximate average speed for the round trip in miles per hour? | [
"1.5",
"1.25",
"1.33",
"1"
] | C | Average speed = total distance/total time
Here number of steps to 20th floor and back is same as she takes the same route.
D = 2T1 and D=4T2
Therefore, T1 = D/2 and T2 = D/4
T1+T2 = 3D/4
Therefore, average speed = 2d/3d/4 =2d * 4/3d
Answer is 1.3 Since, the options are far away we need not solve till the decimal points... | AquaRat_train |
In a class of 40 students, 2 students did not borrow any books from the library, 12 students each borrowed 1 book, 12 students each borrowed 2 books, and the rest borrowed at least 3 books. If the average number of books per student was 2, what is the maximum number of books any single student could have borrowed? | [
"6",
"3",
"5",
"4"
] | C | The class borrowed a total of 40*2 = 80 books.
The 26 students who borrowed 0, 1, or 2 books borrowed a total of 12 + 12*2 = 36.
To maximize the number of books borrowed by 1 student, let's assume that 13 students borrowed 3 books and 1 student borrowed the rest.
80 - 36 - 3*13 = 5
The maximum number of books borrowed ... | AquaRat_train |
In the future, when robots can be used both in homes and in other areas, they could improve the living standards of people. Many people burn their energy on their day-to-day tasks like cooking, cleaning after work, etc. When robots can complete such jobs, people can spend more time with their family and friends. Expert... | [
"problem solving.",
"communicating with others.",
"working safely.",
"critical thinking."
] | C | MMLU_train | |
A store sells chairs and tables. If the price of 3 chairs and 1 table is 60% of the price of 1 chair and 3 tables, and the price of 1 table and 1 chair is $80, what is the price, in dollars, of 1 table? (Assume that every chair has the same price and every table has the same price.) | [
"60",
"72",
"84",
"64"
] | A | LET C= CHAIR ; T =TABLE
3C+1T = 0.6 (1C + 3T) OR C( 3-0.6) = 1.8T -1T OR 2.4C = 0.8 T THEREFORE C= 0.8/2.4 T = 1/3 T
IC +1T =80 OR 1/3T + 1T =80 THEREFORE T= 80*3/4 = 60
D | AquaRat_train |
What is the intersection point of the critical temperature and the critical pressure called? | [
"critical point",
"basic juncture",
"instance point",
"peak point"
] | A | Refer again to water’s phase diagram ( Figure above ). Notice point E, labeled the critical point . What does that mean? At 373.99°C, particles of water in the gas phase are moving very, very rapidly. At any temperature higher than that, the gas phase cannot be made to liquefy, no matter how much pressure is applied to... | SCiQ_train |
If you were on the street in Mexico today you might think you were in an operating room, surrounded by doctors. You could see many concerned people with masks trying their best to stop the swine flu . And the masks aren't only being used in Mexico. A friend of mine traveling from New York City to Florida was given a... | [
"Keeping the masks dry.",
"Changing the masks often.",
"Choosing very thick masks.",
"Wearing big masks."
] | B | MMLU_train | |
What kind of joints allow for a wide range of flexibility? | [
"ball and socket",
"pivot",
"anchor",
"lever"
] | A | Socket diagram: Pearson Scott Foresman; Joint diagram: Zachary Wilson. Ball and socket joints allow for a wide range of flexibility . Socket diagram: Public Domain; Joint diagram: CC BY-NC 3.0. | SCiQ_train |
Snowflakes! You can catch them on your tongue or use them to make a perfect snowball. But have you ever thought about taking pictures of them? Ken Libbrecht did. He is a physics professor from California. Although the weather in California is usually warm and sunny, Ken's hobby is taking pictures of snowflakes. He tr... | [
"What we can do with snowflakes.",
"Some beautiful pictures of snowflakes.",
"Ken Libbrecht's snowflake photography.",
"The unique patterns of snowflakes."
] | C | MMLU_train | |
Coal is solid rock that began as organic material that was deposited in a swamp. The formation of coal suggests that | [
"coal is made mostly of skeletal remains of animals.",
"coal is formed from magma that has solidified over time.",
"it quickly becomes petrified when water is removed.",
"geologic processes continue over millions of years."
] | D | MMLU_train | |
A man’s current age is (2/5) of the age of his father. After 10 years, he will be (1/2) of the age of his father. What is the age of father at now? | [
"39",
"38",
"45",
"50"
] | D | Let, father’s current age is A years.
Then, Man’s current age =[ (2/5)A ]years.
Therefore, [ (2/5)A + 10 ]= (1/2)(A + 10)
2(2A + 50) = 5(A + 10)
A = 50
D | AquaRat_train |
If it is a possible to make a meaningful word from the first, the fourth, the seventh and the ninth letters of the word PESTICIDE, then last letter of the word is your answer. If more than one such word can be formed give 'M' as your answer and if no such word can be formed give 'X' as your answer. | [
"T",
"X",
"P",
"M"
] | B | If we observe from the given word 1st=p,4th=T,7th=I,9th=E
by the combination and arrangement we cant make a word
So the answer is X
ANSWER:E | AquaRat_train |
Most hormones are controlled by what type of feedback, which causes the hormone to decrease its own production? | [
"neutral",
"unusual",
"negative",
"positive"
] | C | Most hormones are controlled by negative feedback in which the hormone feeds back to decrease its own production. This type of feedback brings things back to normal whenever they start to become too extreme. Positive feedback is much less common because it causes conditions to become increasingly extreme. | SCiQ_train |
The average of 2, 8, 9, 10, 1 and x is 6. What is the value of x? | [
"3",
"6",
"8",
"2"
] | B | x=6 because:
(2+8+9+10+1+x)/6=6
(2+8+9+10+1+x)/6*6=6*6
(2+8+9+10+1+x)=36
(2+8+9+10+1+x)-30=36-30
x=6
Therefore, the correct answer is D, 6. | AquaRat_train |
A school currently maintains a fixed number of students per class. If the ratio of students per class were to be increased by 1, 10 fewer classes would be run for a total of 120 students. What is the current ratio W of students per class? | [
"4",
"12",
"8",
"W=3"
] | D | Another way to look at the problem...
Since the total is 120, RATIO * CLASSES = R*C = 120.....(i)
we are looking where ratio increases by 1 and # of classes decreases by 10 = (R+1)(C-10) = RC+C-10R-10=120....(ii)
(ii)-(i)....
C=10R+10 = 10(R+1).......
so # of classes has to be multiple of 10
AS RC=120.... 10(R+1)*R = 1... | AquaRat_train |
The points A(0, 0), B(0, 4a - 4) and C(2a + 1, 2a + 6) form a triangle. If angle ABC = 90, what is the area of triangle ABC? | [
"88",
"78",
"90",
"98"
] | A | 1/2bh=1/2(2a+1)(2a+6)
Now 4a-4=2a+6
2a=10 , a=5
Therefore,
A(0,0); B(0,16); C(11,16)
1/2*11*16=88
Answer: A | AquaRat_train |
There is a story about a man who lost his legs and left arm in an accident. After the accident, only a finger and thumb on his right hand remained. He was a brilliant, creative, and educated man. He had gained a lot of experience while traveling around the world, so he became very depressed after his accident. He was a... | [
"receive the school education",
"write to other people who needs encouragement",
"meet the people who are depressed",
"help other people lost arms and legs"
] | B | MMLU_train | |
If your mother wants to tell you something , she uses words . Birds can not talk as we do . But some birds can make sounds to warn their young of danger . They have their own ways to make the young birds do certain thing . The jackdaw is a kind of blackbirds that lives in Europe . Jackdaws live together in flocks. Yo... | [
"Europe",
"Australia",
"America",
"Africa"
] | A | MMLU_train | |
The pine tree is the sporophyte; its sporangia are located on scalelike structures packed densely where? | [
"in the limb tips",
"in cones",
"in the bark",
"in the needles"
] | B | SCiQ_train | |
Lava flows from a volcano and hardens into what? | [
"sand",
"snow",
"rock",
"life"
] | C | lava flows from a volcano and hardens into rock. | SCiQ_train |
If r and s are positive integers, and r2 + r/s is an odd integer, which of the following cannot be even? | [
"D. r^3 +3",
"r^(s+1) + s^r",
"3r + 2s",
"(r-1)(s+2)"
] | A | r and s are positive integers.
r2+rsr2+rs is an odd integer. Since r2r2 is an integer, rsrs will also be an integer. So s is a factor of r.
To get an odd integer after adding two terms, one term must be odd and the other even.
Say r is even. Then r^2 is even. So r/s must be odd. This means that when we divide r by s, w... | AquaRat_train |
Three numbers are in the ratio 5 : 6 : 7. The sum of its longest and smallest numbers equals the sum of the third number and 48. Find the third number? | [
"84",
"48",
"85",
"37"
] | B | Let the numbers be 5x, 6x, 7x.
Largest number = 7x.
Smallest number = 5x.
Third number = 6x.
7x + 5x = 6x + 48
6x = 48 => third number is 48.
Answer: Option C | AquaRat_train |
A crate of apples contains 1 bruised apple for every 35 apples in the crate. Two out of every 4 bruised apples are considered not fit to sell, and every apple that is not fit to sell is bruised. If there are 10 apples not fit to sell in the crate, how many apples are there in the crate? | [
"840",
"270",
"700",
"360"
] | C | as given 2 out of every 4 bruised apple is not fit to sell
or, 50% of the bruised apples are not fit to sell.
as per the question 10 are not fit to sell
or,
0.50x=10
x=1000/50=20
thus total number of bruised apples =20
total number of apples =35*20=700
Answer: C | AquaRat_train |
An object undergoing circular motion experiences centripetal what? | [
"vibration",
"velocity",
"acceleration",
"transmission"
] | C | Linear or tangential acceleration refers to changes in the magnitude of velocity but not its direction. We know from Uniform Circular Motion and Gravitation that in circular motion centripetal acceleration, a c , refers to changes in the direction of the velocity but not its magnitude. An object undergoing circular mot... | SCiQ_train |
If the crust of a planet is adjusted in short order, a likely culprit is | [
"moons",
"quivers",
"night",
"logs"
] | B | MMLU_train | |
The overall purpose of the light-dependent reactions is to convert light energy into this? | [
"calories",
"photosynthesis",
"chemical reactions",
"thermal energy"
] | C | How Light-Dependent Reactions Work The overall purpose of the light-dependent reactions is to convert light energy into chemical energy. This chemical energy will be used by the Calvin cycle to fuel the assembly of sugar molecules. The light-dependent reactions begin in a grouping of pigment molecules and proteins call... | SCiQ_train |
There were two candidates in an election. Winner candidate received 60% of votes and won the election by 240 votes. Find the number of votes casted to the winning candidate? | [
"720",
"199",
"255",
"228"
] | A | W = 60% L = 40%
60% - 40% = 20%
20% -------- 240
60% -------- ? => 720
Answer:B | AquaRat_train |
A crate of mangoes contains one bruised mango for every thirty mango in the crate. If three out of every four bruised mango are considerably unsaleble and there are 11 unsaleable mangoes in the crate then how msny mango are there in the crate? | [
"110 mangoes",
"120 mangoes",
"100 mangoes",
"130 mangoes"
] | A | 110 mangoes
ANSWER:B | AquaRat_train |
Of the nine classes of vertebrates, how many are fish? | [
"four",
"one",
"three",
"five"
] | D | Of course. But what type? Of the nine classes of vertebrates, five are fish. Each of the five classes has distinguishing characteristics that allow members to be classified appropriately. Stingray are cartilaginous fish, related to sharks. | SCiQ_train |
What is the last step in a scientific investigation? | [
"documenting findings",
"retesting findings",
"communicating findings",
"verifying findings"
] | C | The last step in a scientific investigation is communicating what you have learned with others. This is a very important step because it allows others to test your hypothesis. If other researchers get the same results as yours, they add support to the hypothesis. However, if they get different results, they may disprov... | SCiQ_train |
Cardiovascular disease, some types of cancer, type 2 diabetes, and obesity are considered what kind of preventable diseases? | [
"age diseases",
"lifestyle diseases",
"environmental diseases",
"atmosphere diseases"
] | B | Regular physical exercise is important in preventing lifestyle diseases such as cardiovascular disease, some types of cancer, type 2 diabetes, and obesity. Regular exercise also improves the health of the muscular system. Muscles that are exercised are bigger and stronger than muscles that are not exercised. | SCiQ_train |
Everyone is familiar with white fat, which serves as an energy warehouse. Many mammals also have brown fat, which has the unique ability to produce heat. Brown fat is sometimes mistaken for a type of gland , which it resembles more than white fat. It varies in color1 from dark red to tan. When the animal is exposed t... | [
"becomes less in amount with age",
"proves less active in low temperatures",
"exists nowhere but in the lower neck",
"has nothing in common with white fat"
] | A | MMLU_train | |
You add x ml of a 25% alcohol solution to a 200 ml of a 10% alcohol solution to obtain another solution. Find the amount of alcohol in the final solution in terms of x. Find the ratio, in terms of x, of the alcohol in the final solution to the total amount of the solution. What do you think will happen if x is very lar... | [
"500 ml",
"100 ml",
"200 ml",
"300 ml"
] | B | Let us first find the amount of alcohol in the 10% solution of 200 ml.
200 * 10% = 20 ml
The amount of alcohol in the x ml of 25% solution is given by
25% x = 0.25 x
The total amount of alcohol in the final solution is given by
20 + 0.25 x
The ratio of alcohol in the final solution to the total amount of the solution i... | AquaRat_train |
Mobile phones help us easily find people anywhere at any time. A mobile phone can include many things, such as games, music and Internet surfing. Today, 4,600,000,000 people around the world have mobile phones, according to CBS News. However, using mobile phones too often may cause cancer . It's reported that people wh... | [
"Six.",
"Five.",
"Four.",
"Three."
] | B | MMLU_train | |
A palindrome is a number that reads the same forward and backward, such as 120. How many odd, 4-digit numbers are palindromes? | [
"90",
"55",
"40",
"2500"
] | B | A palindrome is a number that reads the same forward and backward. Examples of four digit palindromes are 1221, 4334, 2222 etc
You basically get to choose the first two digits and you repeat them in opposite order. Say, you choose 45 as your first two digits. The next two digits are 54 and the number is 4554.
Also, you... | AquaRat_train |
The two adrenal glands are glands located just above the what? | [
"intestines",
"lungs",
"esophagus",
"kidneys"
] | D | The two adrenal glands are glands located just above the kidneys. Each adrenal gland has an outer layer (cortex) and inner layer (medulla) that secrete different hormones. The hormone adrenaline is secreted by the inner layer. It prepares the body to respond to emergencies. For example, it increases the amount of oxyge... | SCiQ_train |
What might eventually happen to a species if it is unable to reproduce? | [
"adaptation",
"migration",
"natural selection",
"extinction"
] | D | SCiQ_train | |
Many people may not believe it, but this is what is happening: polar bears are dying out! They are dying because they are losing a great deal of habitat due to human incursion and global warming. They are dying because of starvation as well. With the sea ice they depend on for survival shrinking, it is becoming incre... | [
"For the predators in the ecosystem.",
"For the seals in Arctic Circle.",
"For our own source of food.",
"For our environment."
] | C | MMLU_train | |
A jar contains only three types of objects: red, blue, and silver paper clips. The probability of selecting a red paper clip is 3/7, and the probability of selecting a blue paper clip is 1/7. What is the probability of selecting a silver paper clip? | [
"3/7",
"1/12",
"11/12",
"3/4"
] | A | Prob of Red = 3/7
Prob of Blue = 1/7
Prob of Silver = ?
P(Silver) = 1 - P(Red) - P(Blue) ==> 1-1/7-3/7 = 3/7
Ans: C | AquaRat_train |
What element is all life built around? | [
"oxygen",
"neon",
"hydrogen",
"carbon"
] | D | The cell is the basic unit of life. A cell is made of molecules, which are made of elements. All life-which means all bacteria and archaea, all protists, fungi, plants and animals-is built around the element carbon, and four categories of organic compounds: carbohydrates, lipids, proteins, and nucleic acids. These mole... | SCiQ_train |
Many adolescents experience frequent mood swings. name one of the causes for this. | [
"surging hormones",
"psychological changes",
"maturing nervous system",
"growing hormones"
] | A | Adolescents may have mood swings because of surging hormones. | SCiQ_train |
Because their cells are arranged in bundles, the appearance of skeletal and cardiac muscles is described as what? | [
"striated",
"incised",
"quadrant",
"cylindrical"
] | A | http://zonalandeducation. com/mstm/physics/mechanics/vectors/introduction/introductionVectors. html. | SCiQ_train |
Life on Mars could become a reality and it could happen in your lifetime. A welcoming planet Scientists say Earth's neighbor Mars, a bright red planet about half Earth's size, is the most likely to support human life. Mars even has frozen water on its surface. Since the late 1990s, NASA has been exploring Mars using re... | [
"Martian germs may be different from those on Earth.",
"Martian germs may be brought back to Earth.",
"People may carry germs to Mars.",
"There may be germs on Mars."
] | B | MMLU_train | |
What term refers to a wall or partition that divides the heart into chambers? | [
"cysts",
"cartilage",
"valve",
"septum"
] | D | Septa of the Heart The word septum is derived from the Latin for “something that encloses;” in this case, a septum (plural = septa) refers to a wall or partition that divides the heart into chambers. The septa are physical extensions of the myocardium lined with endocardium. Located between the two atria is the interat... | SCiQ_train |
Last week Johnny had a very busy weekend. On Saturday morning, he cleaned his room. That made his mother very happy. In the afternoon, he did his math homework. It was not difficult, so it only took him one hour to finish the homework. And in the evening, he went to visit his aunt with his parents. They had a big dinne... | [
"He played basketball.",
"He played football.",
"He went swimming.",
"He had a rest."
] | B | MMLU_train | |
Train K crosses a pole in 30 seconds and train L crosses the same pole in one minute and 20 seconds. The length of train K is three-fourths the length of train L. What is the ratio of the speed of train K to that of train L | [
"3 : 1",
"2 : 3",
"2 : 1",
"1 : 2"
] | C | Given that train K crosses a pole in 30 seconds and train L crosses the same pole in one minute and 15 seconds.
Let the length of train K be Lk and that of train L be Ll
given that Lk = 3/4 Ll
As the train K and L crosses the pole in 30 seconds and 80 seconds respectively,
=> Speed of train K = sk = Lk/30
Speed of trai... | AquaRat_train |
Dropbox charges $3.10 for first 1/5 of a month for 500 GB storage, plus $0.40 for each additional 1/5 of a month. What would Dropbox charge for a data storage of 500 GB for 8 months ? | [
"$16.00",
"$17.80",
"$18.70",
"$19.10"
] | C | first 1/5 month charge = $3.10
rest of the months = 8 - (1/5) = 39/5
charge for the rest of the months = 39 *0.4 = 15.6
total charge = 3.10+15.6 = 18.7
Answer is D. | AquaRat_train |
A and B start a business, with A investing the total capital of Rs.50000, on the condition that B pays A interest @ 10% per annum on his half of the capital. A is a working partner and receives Rs.1500 per month from the total profit and any profit remaining is equally shared by both of them. At the end of the year, it... | [
"59005",
"59000",
"59002",
"59007"
] | B | Interest received by A from B = 10% of half of Rs.50000 = 10% * 25000 = 2500.
Amount received by A per annum for being a working partner = 1500 * 12 = Rs.18000.
Let 'P' be the part of the remaining profit that A receives as his share. Total income of A = (2500 + 18000 + P)
Total income of B = only his share from the re... | AquaRat_train |
The animal kingdom has a new member. On September 12, 2012, researchers made a report to the world that they discovered a new species of monkey. It is called the lesula. And it is only the second monkey species discovered in 28 years. Scientists first saw the lesula in June, 2007 in Congo, a country in Africa. The les... | [
"In 2002.",
"In 2008.",
"In 2007.",
"In 2012."
] | D | MMLU_train | |
What do vectors possess that scalars do not? | [
"magnitude and direction",
"direction and texture",
"height and polarity",
"magnitude and weight"
] | A | In physics, a quantity, such as mass, length, or speed that is completely specified by its magnitude and has no direction is called a scalar . A vector , on the other hand, is a quantity possessing both magnitude and direction. A vector quantity is typically represented by an arrow-tipped line segment. The length of th... | SCiQ_train |
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