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Micro blogs like Weibo are nothing new for the young Chinese. A newspaper in Chengdu did a survey last month. It found that 90 percent of junior high school students use micro blogs. They give students an outlet for emotion. "I use micro blogs to record my life. I let everyone 'see' my feelings and complaints ," sai...
[ "chats with her teachers", "records her schoolwork", "shares her feelings with others", "learns English" ]
D
MMLU_train
Parasites usually harm their hosts (or they wouldn't be parasites), but what do they usually stop short of doing?
[ "reproducing with hosts", "benefiting their hosts", "killing their host", "mutating their hosts" ]
C
Some parasites kill their host, but most do not. It’s easy to see why. If a parasite kills its host, the parasite may also die. Instead, parasites usually cause relatively minor damage to their host.
SCiQ_train
If 123xy is divisible by 40, then the value in place of x+y is :
[ "4", "9", "7", "3" ]
A
123xy 1 + 0 = 1/4 ≠ 40 7 + 0 = 70/4 ≠ 40 4 + 0 = 40/4 = 10 Answer: C
AquaRat_train
Can you speak to dolphins? Of course you can but you won't be able to understand them! We interviewed a biologist and asked her what research on dolphin communication has shown. This is what she told us. Just like dogs, cats and other mammals, dolphins communicate by using sound, vision , touch and taste. Each dolphin...
[ "Smell", "Touch", "Taste", "Vision" ]
A
MMLU_train
Plants that live in the rainforest have adapted in amazing ways to several very difficult conditions. This means that the plant has changed something in its "body" or "habits" to make it easier to survive in difficult conditions. There are several conditions they have had to adapted to. First, the soil of the forest fl...
[ "They rely on other plants to reach the canopy layer.", "They grow under big leaves for protection.", "They change their leaf structure constantly.", "They grow on other plants' branches." ]
A
MMLU_train
This topic is locked. If you want to discuss this question please re-post it in the respective forum. Matt and Peter can do together a piece of work in 20 days. After they have worked together for 12 days Matt stops and Peter completes the remaining work in 8 days. In how many days Peter complete the work separately.
[ "20 days", "24 days", "25 days", "27 days" ]
A
Together they complete the job in 20 days means they complete 12/20 of the job after 12 days. Peter completes the remaining (8/20) of the job in 8 days which means that the whole job(1) can be completed in X days. <=> 8/20->8 <=> X=8/(8/20)=20 Thus the answer is A.
AquaRat_train
Within each sporangium, hundreds of what kind of spores develop and are dispersed through the air?
[ "haploid", "diploid", "infertile", "polyploid" ]
A
SCiQ_train
The radius of a wheel is 22.4 cm. What is the distance covered by the wheel in making 400 resolutions?
[ "708 m", "774 m", "714 m", "563.2 m" ]
D
In one resolution, the distance covered by the wheel is its own circumference. Distance covered in 500 resolutions. = 400 * 2 * 22/7 * 22.4 = 56320 cm = 563.2 m Answer:E
AquaRat_train
A wave is the transfer of energy through what else?
[ "air", "liquid", "matter", "gas" ]
C
Most ocean waves are caused by winds. A wave is the transfer of energy through matter. A wave that travels across miles of ocean is traveling energy, not water. Ocean waves transfer energy from wind to the water. The energy is transferred from one water molecule to the next. The energy of a wave may travel for thousand...
SCiQ_train
An art gallery owner is hanging paintings for a new show. Of the six paintings she has to choose from, she can only hang two on the main wall of the gallery. Assuming that she hangs as many as possible on that wall, in how many ways can she arrange the paintings?
[ "64", "120", "216", "30" ]
D
Arrangment means permutations questions.. 6P2 = 6!/2! = 30. IMO option B is correct answer..
AquaRat_train
How many weeks are in the life cycle of ladybugs
[ "three to six", "two to four", "nine to six", "four to six" ]
D
Ladybugs, also known as ladybird beetles, have a life cycle of four to six weeks. In one year, as many as six generations of ladybird beetles may hatch. In the spring, each adult female lays up to 300 eggs in small clusters on plants where aphids are present. After a week, the wingless larvae hatch. Both the ladybird b...
SCiQ_train
Dividing net force by total mass yields what?
[ "acceleration", "energy", "movement", "transmission" ]
A
Solution: The force acting to move the system is the weight of box B, and the force resisting the movement is the force of friction between the table and box A. The mass of the system is the sum of the masses of both boxes. The acceleration of the system can be found by dividing the net force by the total mass.
SCiQ_train
What is defined as a group of living and nonliving things and their environment?
[ "ecosystem", "habitat", "degradation", "degradation" ]
A
An ecosystem is a group of living things and their environment. It is made up of both living and nonliving things.
SCiQ_train
In an election only two candidates contested. A candidate secured 70% of the valid votes and won by a majority of 192 votes. Find the total number of valid votes?
[ "436", "422", "480", "438" ]
C
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 = 192 => 4x/10 = 192 => 4x = 1920 => x = 480. Answer:D
AquaRat_train
Phosphate-containing ocean sediments form primarily from the bodies of ocean organisms and from their what?
[ "blood", "skeletons", "excretions", "ancestors" ]
C
The Phosphorus Cycle Phosphorus is an essential nutrient for living processes; it is a major component of nucleic acids and phospholipids, and, as calcium phosphate, makes up the supportive components of our bones. Phosphorus is often the limiting nutrient (necessary for growth) in aquatic, particularly freshwater, eco...
SCiQ_train
The major classes of living members of this phylum include gastropods, bivalves, and cephalopods?
[ "invertebrates", "insects", "mollusks", "crustaceans" ]
C
There are approximately 160,000 living species and probably 70,000 extinct species of mollusks. They are typically divided into ten classes, of which two are extinct. The major classes of living mollusks include gastropods, bivalves, and cephalopods ( Figure below ).
SCiQ_train
Now I'd like to talk to you about your final exam. The exam will be held next Thursday, the last day of the exam week. Remember to bring two of three pens in case you run out of ink. And unlike the midterm exam, this test will not include multiple --- choice questions; it will consist entirely of essays . You'll have t...
[ "There will be only multiple-choice questions.", "The exam will contain both multiple-choice and essay questions.", "The exam will have an oral and a written section.", "There will be only essay questions." ]
D
MMLU_train
If our earth is anything, it is this
[ "alien", "nearest to Pluto", "frozen solid", "mountainous" ]
D
MMLU_train
Farsightedness, or hyperopia, is the condition in which distant objects are seen clearly, but nearby objects are?
[ "inverted", "darker", "invisible", "blurry" ]
D
Farsightedness, or hyperopia, is the condition in which distant objects are seen clearly, but nearby objects are blurry. It occurs when the eyeball is shorter than normal. This causes images to be focused in back of the retina. Hyperopia can be corrected with convex lenses. The lenses focus images farther forward in th...
SCiQ_train
You must have seen an oil lamp before. But do you know how it works? One end of the lamp wick is immersed(............) in oil and the other end is not immersed. When you light the end which is not immersed, it will burst into flame . This is because the oil is able to rise up the lamp wick thus helping it to burn....
[ "the thinner the diameter, the greater the attractive force", "the diameter of the tube and the kind of the liquid decide the greatness of the force", "the thinner the diameter, the smaller the attractive force", "oil climbs up higher than water" ]
B
MMLU_train
A synergist that makes the insertion site more stable is called a what?
[ "dominator", "kilocalorie", "lesion", "fixator" ]
D
CHAPTER REVIEW 11.1 Interactions of Skeletal Muscles, Their Fascicle Arrangement, and Their Lever Systems Skeletal muscles each have an origin and an insertion. The end of the muscle that attaches to the bone being pulled is called the muscle’s insertion and the end of the muscle attached to a fixed, or stabilized, bon...
SCiQ_train
Excluding stoppages, the speed of a train is 45 kmph and including stoppages it is 42 kmph. Of how many minutes does the train stop per hour?
[ "12", "4", "18", "16" ]
B
T = 3/45 * 60 = 4 Answer: B
AquaRat_train
Every human being has a unique arrangement of the skin on his fingers and this arrangement is unchangeable. Scientists and experts have proved the uniqueness of finger-prints and discovered that no exactly similar pattern is passed on from parents to children, though nobody knows why this is the case. The ridge structu...
[ "worth trying", "successful", "useful", "useless" ]
D
MMLU_train
Shlander is a man from space. He thinks the people and things on the earth are very strange. He is now writing a letter to his friend at home. Here is part of his letter. Read it and answer the questions. Now I am in a strange world. It is very nice. There are many new things here. There are many earth monsters here,...
[ "a monkey", "an earth monster", "a tin box", "a strange world" ]
B
MMLU_train
What illnesses are caused by damage to the alveoli of the lungs?
[ "smoking and emphysema", "chronic and emphysema", "avian and emphysema", "pneumonia and emphysema" ]
D
Pneumonia and emphysema are caused by damage to the alveoli of the lungs.
SCiQ_train
How many seconds will a 700 meter long train moving with a speed of 63 km/hr take to cross a man walking with a speed of 3 km/hr in the direction of the train ?
[ "18", "48", "36", "42" ]
D
Explanation: Here distance d = 700 mts speed s = 63 - 3 = 60 kmph = 60 x 5/18 m/s time t = = 42 sec. Answer: C
AquaRat_train
Types of neurons include sensory neurons, motor neurons, and?
[ "histones", "synapses", "interneurons", "anions" ]
C
Types of neurons include sensory neurons, motor neurons, and interneurons.
SCiQ_train
What determines velocity?
[ "change in direction", "direction", "mass per unit", "distance over time in a given direction" ]
D
Figure 28.14 Classically, velocities add like ordinary numbers in one-dimensional motion. Here the girl throws a snowball forward and then backward from a sled. The velocity of the sled relative to the Earth is relative to the Earth is.
SCiQ_train
The length of a rectangular plot is 10mtr more than its width. The cost of fencing the plot along its perimeter at the rate of Rs. 6.5mtr is Rs.1950. The perimeter of the plot is?
[ "126", "156", "260", "300" ]
D
Sol. Let width = x, Length = (10+x) Perimeter = 2(x+(10+x)) = 2(2x=10) & 2(2x+10)*6.5 = 1950 X = 70 Required perimeter = 2(70+80) = 300 D
AquaRat_train
What value will replace the question mark in the following equation ? 5172.49 + 378.352 + ? = 9318.678
[ "3677.863", "None of them", "3767.683", "3767.836" ]
D
Let 5172.49 + 378.352 + x = 9318.678 Then , x = 9318.678 – (5172.49 + 378.352) = 9318.678 – 5550.842 = 3767.836 Answer is A.
AquaRat_train
Betty took out a charge account at the General Store and agreed to pay 4% simple annual interest. If she charges $50 on her account in January, how much will she owe a year later, assuming she does not make any additional charges or payments?
[ "$52.00", "$52.50", "$53.50", "$53.00" ]
A
1.04*$50=$52.00 The answer is B.
AquaRat_train
What is the term for a disease that is not contagious?
[ "noninfectious disease", "common cold", "benign", "uncultured disease" ]
A
Not all diseases are contagious. A disease that is not contagious is called a noninfectious disease. These diseases are not caused by pathogens. Instead, they are likely to have causes such as lifestyle factors, environmental toxins, or gene mutations. Common types of noninfectious diseases include cancer, diabetes, an...
SCiQ_train
"Mom, I have cancer." These four words catapulted my son and me on a journey that lasted two years. On that day I felt a wave of paralyzing fear. Scott was the oldest of my four children. He was 33 years old and a successful assistant principal at SamRayburn Hifht School in Pasadena, Texas. He and his wife Carolyn were...
[ "it takes a long time to make a person recover from the shock of losing a child", "Scott is proud of his mother", "life is full of happiness and sorrow.", "We'd better make our life count instead of counting your days." ]
D
MMLU_train
My name is Tom. I'm nine. This is my mother.Her name's Linda Johnson. Her telephone number is 13052864515.And this is my father.His name is Mike Johnson. His phone number is 13120884699.And this is my sister.What's her name?Her name is Mary. Look!The boy is my brother Nick. Mary is eight and Nick is six. Mary is _ .
[ "six", "nine", "eight", "seven" ]
C
MMLU_train
If log12 27 = a, then log6 16 is:
[ "(3-a)/4(3+a)", "4(3-a)/(3+a)", "(3+a)/4(3-a)", "5(3-a)/(3+a)" ]
B
log12 27 = a => log 27/ log 12 = a => log 33 / log (3 * 22) =a => 3 log 3 / log 3 + 2 log 2 = a => (log 3 + 2 log 2)/ 3 log 3 = 1/a => (log 3/ 3 log 3) + (2 log 2/ 3 log 3) = 1/3 => (2 log 2)/ (3 log 3) = 1/a – 1/3 = (3-a)/ 3a => log 2/ log 3= (3-a)/3a => log 3 = (2a/3-a)log2 log16 16 = log 16/ log 6 = log 24/ log (2*3...
AquaRat_train
Kamal started a business with Rs.25000 and after 4 months, Kiran joined him with Rs.60000. Kamal received Rs.58000 including 10% of profit as commission for managing the business. What amount did Kiran receive?
[ "76000", "78000", "72000", "70000" ]
C
Explanation: Ratio of the profits of Kamal and Kiran =25000×12:60000×8 =25×12:60×8 =5×3:12×2 =5:4×2 =5:8 Let the total profit =x Then Kamal received 10x/100=x/10 as commission for managing the business. Remaining profit =x−x10=9x10 which is shared in the ratio =5:8 Total amount received by Kamal =x/10+9x/10×5/13 ⇒x/10+...
AquaRat_train
If a and b are positive integers, and a=2b+6, the greatest common divisor of a and b CANNOT be
[ "2", "1", "12", "6" ]
C
since a =2b + 6, so we can say b = (a/2 -3). So we need to find not possible gcd values for a , (a/2 -3). A. 1, We can easily get this value by making a = 8. B. 2. we can again get this value as GCD by keeping a =10 C. 3 We will get this as GCD by keeping a =12 D. 6 We can get GCD 6 by keeping (a/2-3) = 6 and a as 18. ...
AquaRat_train
If after 300 grams of water were added to the 24%-solution of alcohol, the strength of the solution decreased by one-third, how much of the 24%-solution was used?
[ "350 grams", "250 grams", "600 grams", "180 grams" ]
C
I too think 600 grams should be the answer. My reasoning is The h20 content in 300 gms of water is 1 h20 content in 24% solution is 0.76 Resulting new solution's concentration decreases by one third means. Now it becomes 16% solution which means h20 content is 0.84 Let amount of solution be X Then the equation can be s...
AquaRat_train
What is it called when you get the same result after repeating an experiment?
[ "initiation", "replication", "variable", "control" ]
B
Getting the same result when an experiment is repeated is called replication. If research results can be replicated, it means they are more likely to be correct.
SCiQ_train
Carina has 55 ounces of coffee divided into 5- and 10-ounce packages. If she has 2 more 5-ounce packages than 10-ounce packages, how many 10-ounce packages does she have?
[ "5", "3", "7", "4" ]
B
Lets say 5 and 10 ounce packages be x and y respectively. Given that, 5x+10y=55 and x=y+2. What is the value of y. Substituting the x in first equation, 5y+10+10y=55 ->y=45/15.=3 E
AquaRat_train
Electron transport in mitochondria results in a chemiosmotic gradient of which particle across the mitochondrial membrane?
[ "ADP", "ATP", "protons", "neutrons" ]
C
MMLU_train
What type of vehicles is able to go to the deepest ocean floor?
[ "off road vehicles", "all-terrain vehicles", "autonomous controlled airplanes", "remote-control vehicles" ]
D
Today, remote-control vehicles, called remotely operated vehicles (ROVs) go to the deepest ocean floor. They don’t have any people on board. However, they carry devices that record many measurements. They also collect sediments and take photos.
SCiQ_train
Niche refers to the role a species plays in what?
[ "migration", "reproduction", "the ecosystem", "the habitat" ]
C
The role a species plays in the ecosystem is called its niche.
SCiQ_train
The prostate is formed of both muscular and which other tissues?
[ "nonvascular tissue", "scar", "glandular", "cartilage tissue" ]
C
Prostate Gland As shown in Figure 27.2, the centrally located prostate gland sits anterior to the rectum at the base of the bladder surrounding the prostatic urethra (the portion of the urethra that runs within the prostate). About the size of a walnut, the prostate is formed of both muscular and glandular tissues. It ...
SCiQ_train
What planet has the most volcanoes?
[ "venus", "uranus", "Mars", "Earth" ]
A
Venus has more volcanoes than any other planet. There are between 100,000 and one million volcanoes on Venus! Most of the volcanoes are now inactive. There are also a large number of craters. This means that Venus doesn’t have tectonic plates. Plate tectonics on Earth erases features over time. Figure below is an image...
SCiQ_train
The positive value of x that satisfies the equation (1 + 2x)^3 = (1 + 3x)^4 is between Bunuel, can you please explain this one?
[ "0.5 and 1", "2 and 2.5", "1 and 1.5", "1.5 and 2" ]
A
Trial and error would probably be the easiest way to solve this problem. When x is large enough positive number, then because of the exponents (5>4), LHS will be more than RHS (as you increase the positive value of x the distance between the values of LHS and RHS will increase). Try x=1 --> LHS=3^5=81*3=243 and RHS=4^4...
AquaRat_train
The average of 7 numbers is 24. If each number be multiplied by 5. Find the average of new set of numbers?
[ "110", "120", "125", "122" ]
B
Explanation: Average of new numbers = 24 * 5 = 120 Answer: Option C
AquaRat_train
What is the natural movement called within your intestines?
[ "peristalsis", "proteolysis", "progress", "fibroblasts" ]
A
When most of the chyme has been absorbed, the small intestinal wall becomes less distended. At this point, the localized segmentation process is replaced by transport movements. The duodenal mucosa secretes the hormone motilin, which initiates peristalsis in the form of a migrating motility complex. These complexes, wh...
SCiQ_train
Hello, I'm a middle school student from Hainan. My Chinese name is Li Ying. My English name is Alice. I am Chinese. I'm in No. 26 Middle School. I am a good student. Now I am thirteen years old. Our school is very nice. Ms Smart is my English teacher. I like her and she loves us very much. There are three people in my ...
[ "a teacher", "a doctor", "a student", "a worker" ]
A
MMLU_train
Rs.630/- distributed among A,B and C such that on decreasing their shares by RS.10,RS.5 and RS.15 respectively, The balance money would be divided among them in the ratio 3:4:5. Then, B’s share is:?
[ "Rs.215/-", "Rs.210/-", "Rs.310/-", "Rs.205/-" ]
D
A:B:C = 3:4:5 Total parts = 12 B's share is = 4 parts 12 -----> Rs.600/- 4 -----> Rs.200/- B's total = 200 + 5 = Rs.205/- C)
AquaRat_train
A car moves at 98 km/hr. What is the speed of the car in meters per second ?
[ "24 2/9m sec", "28 2/9m sec", "20 2/9m sec", "27 2/9m sec" ]
D
Explanation: Speed=(98∗5/18)m/sec =245/9 m/sec =27 2/9msec Option D
AquaRat_train
Visible light can be split into colors with the use of a what?
[ "spectrum", "prism", "convex lenses", "kaleidoscope" ]
B
The Figure above shows how the electromagnetic spectrum displays a wide variation in wavelength and frequency. Radio waves have wavelengths of as long as hundreds of meters, while the wavelength of gamma rays are on the order of 10 -12 m. The corresponding frequencies range from 10 6 to 10 21 Hz. Visible light can be s...
SCiQ_train
Amides are actually formed by bringing together an amine-containing molecule and molecule containing what?
[ "oxidize acid", "polymer acid", "carboxylic acid", "Fatty acid" ]
C
Amides are actually formed by bringing together an amine-containing molecule and a carboxylic acidcontaining molecule. A molecule of H2O is lost, much like when an ester forms:.
SCiQ_train
Signs in many stores and restaurants warn that microwaves are in use. What is the main reason for this warning?
[ "Some people do not like food cooked in microwave ovens.", "Microwaves sometimes affect people's sense of sight.", "Microwaves sometimes cause hair or teeth to fall out.", "Some people have pacemakers that may be affected by microwaves." ]
D
MMLU_train
A student sets a block at the top of a wooden ramp. The student pushes the block. As the block slides down the ramp, it slows down and then comes to a stop. What force causes the block to slow down?
[ "the force of gravity", "the force of friction", "the force of magnetism", "the force of the student's push" ]
B
MMLU_train
What type of reproduction usually occur during times of environmental stress?
[ "hysterical reproduction", "asexual reproduction", "sexual reproduction", "internal reproduction" ]
C
SCiQ_train
Anybody can learn to count fast if he knows the secret of following trick. Ask your friend to write any five-figure number on the blackboard. Then you write your five-figure number under it. You choose your figures so that each one with the figure above it will make nine. Tell your friend to put a third five-figure ...
[ "23184", "54613", "93184", "99999" ]
A
MMLU_train
Fatal swelling of what organ can result from both encephalitis and meningitis, which typically cause a severe headache and a fever?
[ "heart", "brain", "liver", "kidney" ]
B
Encephalitis and meningitis aren’t very common, but they can be extremely serious. They may cause swelling of the brain, which can be fatal. That’s why it’s important to know the symptoms of these diseases. Both encephalitis and meningitis typically cause a severe headache and a fever. Meningitis also causes a stiff ne...
SCiQ_train
Which atomic particle has a positive charge?
[ "the proton", "the electron", "the nucleus", "the neutron" ]
A
A proton is one of three main particles that make up the atom. The other two particles are the neutron and electron. Protons are found in the nucleus of the atom. This is a tiny, dense region at the center of the atom. Protons have a positive electrical charge of one (+1) and a mass of 1 atomic mass unit (amu), which i...
SCiQ_train
What is the type of plant that has a single cotelydon in the seedling?
[ "dicot", "monocot", "moss", "conifer" ]
B
Monocots Plants in the monocot group are primarily identified as such by the presence of a single cotyledon in the seedling. Other anatomical features shared by monocots include veins that run parallel to the length of the leaves, and flower parts that are arranged in a three- or six-fold symmetry. True woody tissue is...
SCiQ_train
What is the name of the location in which a stream or river starts?
[ "spring", "source", "shore", "mouth" ]
B
All streams and rivers have several features in common. These features are shown in ( Figure below ). The place where a stream or river starts is its source. The source might be a spring, where water flows out of the ground. Or the source might be water from melting snow on a mountain top. A single stream may have mult...
SCiQ_train
Many years ago, my dad was diagnosed with a serious heart disease. He was put on permanent disability, but he still wanted to do something to keep himself busy, so he decided to volunteer at the local children's hospital. My dad loved kids. It was the perfect job for him. He would talk to them and play with them and ...
[ "show his hands were useless", "show his mouth was skillful", "paint pictures as the little girl did", "make an example for the little girl" ]
D
MMLU_train
Along with changes in the shape of the resonant cavity, growth of what organ in pubescent boys leads to the difference in predominant frequencies in speech between men and women?
[ "larynx", "pharynx", "esoophagus", "trachea" ]
A
The fundamental and overtones can be present simultaneously in a variety of combinations. For example, middle C on a trumpet has a sound distinctively different from middle C on a clarinet, both instruments being modified versions of a tube closed at one end. The fundamental frequency is the same (and usually the most ...
SCiQ_train
when a tadpole changes into a frog, the tadpole is like
[ "a maggot", "a lamb", "water", "a grape" ]
A
MMLU_train
The World Health Organization has for the first time expressed "cautious optimism" that the growth in new Ebola cases in West Africa may be slowing down. Bruce Aylward, who is in charge of the WHO response to Ebola, said in Geneva that he was particularly encouraged by evidence of a downward trend in Liberia, one of th...
[ "Because celebrations may increases infections.", "Because the pattern of the disease is up and down.", "Because people may be misled to stop the battle.", "Because we are getting an upper hand on the virus." ]
C
MMLU_train
Mary, Peter, and Lucy were picking chestnuts. Mary picked twice as much chestnuts than Peter. Lucy picked 2 kg more than Peter. Together the three of them picked 26 kg of chestnuts. How many kilograms did each of them pick?
[ "7", "6", "1", "9" ]
B
Let xx be the amount Peter picked. Then Mary and Lucy picked 2x2x and x+2x+2, respectively. So x+2x+x+2=26x+2x+x+2=26 4x=244x=24 x=6x=6 Therefore, Peter, Mary, and Lucy picked 6, 12, and 8 kg, respectively. Answer:A
AquaRat_train
If M : N = 1 : 2, N : O = 2 : 3 and O : P = 4 : 5, then M : N : O : P is :
[ "4 : 8 : 12 : 15", "2 : 4 : 6 : 7", "12 : 15 : 8 : 4", "None of these" ]
A
Explanation : Solution: M : N = 1 : 2, N : O = 2 : 3, O : P = 4 : 5 = (4 *3/4 : 5 * 3/4) = 3 : 15/4. .'. M : N : O : P = 1 : 2 : 3 : 15/4 = 4 : 8 : 12 : 15 Answer : D
AquaRat_train
Two same glasses are respectively 1/4th 1/5th full of milk. They are then filled with water and the contents mixed in a tumbler. The ratio of milk and water in the tumbler is?
[ "9:31", "9:19", "9:17", "9:37" ]
A
1/4 : 3/4 = (1:3)5 = 5:15 1/5 : 4/5 = (1:4)4 = 4:16 ------ 9:31 Answer: B
AquaRat_train
Two tailors P and Q are paid a total of Rs. 550 per week by their employer. If P is paid 120 percent of the sum paid to Q, how much is Q paid per week?
[ "250", "150", "200", "300" ]
A
Consider x x+120 Of x =550 11/5x=550 x=550*5/11 = 250 ANSWER E
AquaRat_train
Let A be the positive integer satisfying the following equation. 9/10 + 99/102th + 999/103rd + · · · + 9999999999/1010th = A/1010th How many 8’s appear in the decimal representation of A ?
[ "9", "0", "8", "1" ]
A
The sum equals (1- 0.1) + (1- .01) +...+ (1 - .0000000001) = 10 .1111111111 = 9:8888888889. Thus A = 98888888889 correct answer E
AquaRat_train
Chemical elements and water are constantly recycled in the ecosystem through what?
[ "biogeochemical cycles", "inorganic cycles", "greenhouse gases", "geothermal cycles" ]
A
Chemical elements and water are constantly recycled in the ecosystem through biogeochemical cycles.
SCiQ_train
Did you know that a turtle can lay 12 eggs in one minute? A large sea turtle lays around 150 eggs at a time. She lays all these eggs in just a few minutes. Large sea turtles live in the warm seas of the world. Except for when they lay their eggs, they spend their whole lives in the water. When it is time to lay their e...
[ "deep water", "danger", "heat", "bad weather" ]
B
MMLU_train
If s,u, and v are positive integers and 2s=2u+2v, which of the following must be true? i. s=0 ii. u is not equal to v iii.u > v
[ "None", "III only", "II and III", "II only" ]
A
Notice two things: 1. we are asked to find out which of the following MUST be true, not COULD be true and 2. s, u, and v are positive integers. Given: 2s=2u+2v --> s=u+v. Now, since s, u, and v are positive integers then s is more than either u or v, so I is never true and III is always true. As for II: it's not necess...
AquaRat_train
What mammalian feature serves functions such as filtration and keeping the body warm?
[ "sensory organs", "shivering", "sweat", "hair" ]
D
Hair serves many functions such as acting as a filter and keeping the body warm.
SCiQ_train
At nine o'clock in the evening on 15 September,1961, Mr and Mrs Hill were driving along Motorway 3 (3) when they saw a spaceship. They drove on to Sand field, the next town. They got there the next morning. Mr Hill looked at his watch. "Why did it take us so long? " he asked. "Three hundred and four kilometers in seven...
[ "At4 a.m. on 15 September.", "At 4 a.m. on 16 September.", "At 6 a.m. on 15 September.", "At 6 a.m. on 16 September." ]
B
MMLU_train
The ratio of the length and the width of a rectangle is 4 : 3 and the area of the rectangle is 5292 sq cm. What is the ratio of the width and the area of the rectangle?
[ "1:80", "1:84", "1:76", "1:72" ]
B
Let the length and the width be 4x and 3x respectively. Area = (4x)(3x) = 5292 12x^2 = 5292 x^2 = 441 x = 21 The ratio of the width and the area is 3x : 12x^2 = 1 : 4x = 1 : 84 The answer is D.
AquaRat_train
In a urban village of india named "owlna" , 70% people have refrigerator , 75% people have television , 65% people got computers and 95% got Air-conditionor. how many people(minimum) got all these luxury.
[ "15%", "3%", "9%", "5%" ]
D
A 10% 100 - [ (100-65)+(100-95)+(100-75) +(100-70)] =100-(30+25+35+5) =100-95
AquaRat_train
Ramu bought an old car for Rs. 42000. He spent Rs. 13000 on repairs and sold it for Rs. 64900. What is his profit percent?
[ "11", "19", "18", "12" ]
C
Total CP = Rs. 42000 + Rs. 13000 = Rs. 55000 and SP = Rs. 64900 Profit(%) = (64900 - 55000)/55000 * 100 = 18% Answer: C
AquaRat_train
Many of us don't pay attention to the importance of eye care. It's said that if you take care of your body, then you can be healthy. That is why our eyes should be given a lot of care. Natural eye care should be put in a number one place. There are several causes leading to poor eyesight like not enough food, gene and...
[ "Eat healthy foods.", "Clean the eyes by using cold water.", "Wear a pair of sunglasses.", "Have a rest after working for a while." ]
D
MMLU_train
How many 3-digit numbers can be formed from the digits 2, 3, 5, 6, 7 and 9, which are divisible by 5 and none of the digits is repeated?
[ "20", "15", "25", "10" ]
A
Since each desired number is divisible by 5, so we must have 5 at the unit place. So, there is 1 way of doing it. The tens place can now be filled by any of the remaining 5 digits (2, 3, 6, 7, 9). So, there are 5 ways of filling the tens place. The hundreds place can now be filled by any of the remaining 4 digits. So, ...
AquaRat_train
What are seamounts that rise above the water surface called?
[ "coasts", "reefs", "islands", "sandbars" ]
C
A seamount is a volcanic mountain on the ocean floor. Seamounts that rise above the water surface are known as islands. There are many seamounts dotting the seafloor.
SCiQ_train
x, a, z, and b are single digit positive integers. x = 1/8 a. z = 1/8 b. (10a + b) – (10x + z) could NOT equal
[ "35", "28", "55", "49" ]
C
a=8x , b =8z therefore(8x.10+8z) - (10x +z) = (8-1) (10x+z) =7.(10x+Z) number should be divisible by 7 E
AquaRat_train
The banker's gain on a bill due due 1 year hence at 12% per annum is Rs.8.4. The true discount is
[ "Rs.54", "Rs.36", "none", "Rs.70" ]
D
Solution T.D = [B.G x 100 / R x T] = Rs.(8.4 x 100 / 12 x 1) = Rs.70. Answer A
AquaRat_train
If each edge of cube increased by 10%, the percentage increase in
[ "19", "25", "22", "21" ]
D
100 × (110)/100 × (110)/100 = 121 => 21% Answer is A.
AquaRat_train
A person cuts down their neighbor's tree without permission. The neighbor who lost the tree is upset, and sues for the cost of the tree, which depends on the age of the tree at the time of cutting. The tree age is determined by
[ "size of branches", "number of leaves", "color of roots", "number of circles" ]
D
MMLU_train
45 workers work 8 hours to dig a hole 30 meters deep. How many extra workers should be hired to dig another hole 30 meters deep by working for 6 hours?
[ "25", "15", "10", "20" ]
B
45 workers * 8 hours / 30 meters = x * 6 / 30 x = 60 total workers 60 - 45 = 15 new workers The answer is B.
AquaRat_train
A train passes a station platform in 36 seconds and a man standing on the platform in 24 seconds. If the speed of the train is 54 km/hr, what is the length of the platform?
[ "180", "267", "288", "211" ]
A
Speed = (54 * 5/18) m/sec = 15 m/sec. Length of the train = (15 x 24)m = 360 m. Let the length of the platform be x meters. Then, (x + 360)/36 = 15 ==> x + 360 = 540 ==> x = 180 m.Answer: A
AquaRat_train
When light passes from one medium to another, it changes what?
[ "color", "speed", "temperature", "density" ]
B
When light passes from one medium to another, it changes speed. For example, when light passes from air to glass, it slows down. If light strikes a sheet of glass at a 90° angle, or perpendicular to the glass, it slows down but still passes straight through the glass. However, if light enters the glass at an angle othe...
SCiQ_train
John started a business, investing Rs.18000. After 3 months and 4 months respectively, Rose and Tom joined him with capitals of 12000 and 9000. At the end of the year the total profit was Rs.4202. What is the difference between Rose ’s and Tom ’s share in the profit?
[ "s.382", "s.390", "s.370", "s.340" ]
A
John : Rose : Tom Ratio of their investments = 18000 × 12 : 12000 × 9 : 9000 × 8 = 6 : 3: 2 The difference between Rose’s and Tom’s share = 1 share :.i.e. = Rs. 4202 × 1/11 = Rs.382. D)
AquaRat_train
Last year, the price of a vacation package was P. At the beginning of this year, the price went up 60%. Lucas used a travel voucher to purchase the vacation package at 25% off this year’s price. In terms of P, how much did Lucas pay?
[ "P + 10", "1.1*P", "1.20*P", "0.02*P" ]
C
Last year price = P; This year price = 1.6P; Lucas used a travel voucher to purchase the vacation package at30%offthis year’s price, thus he paid (1 - 0.25)*1.6P = 1.20P. Answer: E.
AquaRat_train
Mammals generally lack a cloaca and have a separate opening for the what?
[ "tissues tract", "urinary tract", "physical tract", "digestive tract" ]
D
SCiQ_train
Every digit of a number written in binary is either 0 or 1. To translate a number from binary, multiply the nth digit (reading from right to left) by 2^(n-1) What is the largest prime number (written in binary) that is a factor of both 10110000 and 101100000 ?
[ "101", "10001", "10", "1011" ]
D
Binary Divison can provide a quick answer if you are comfortable with it. as option E is the biggest binary number we try with it first : 100010000/ 1011 =10000 1000100000/ 1011 =100000 so answer is option is D
AquaRat_train
Organs of what male biological system include the penis, testes, and epididymis?
[ "circulatory system", "immune system", "reproductive system", "romantic system" ]
C
Male Reproductive Structures. Organs of the male reproductive system include the penis, testes, and epididymis. Several ducts and glands are also part of the system. Do you know the reproductive functions of any of these structures?.
SCiQ_train
What kind of bond doesn't form molecules, but instead forms crystals?
[ "covalent bonds", "ionic bonds", "electron bonds", "magnetic bonds" ]
B
Ionic compounds contain ions of metals and nonmetals held together by ionic bonds. Ionic compounds do not form molecules. Instead, many positive and negative ions bond together to form a structure called a crystal. You can see an example of a crystal in Figure below . It shows the ionic compound sodium chloride. Positi...
SCiQ_train
What is an interation between organisms or species for the same resources in an enviroment is called?
[ "contention", "rivalry", "opposition", "competition" ]
D
Competition is as an interaction between organisms or species for the same resources in an environment.
SCiQ_train
If x is equal to the sum of the integers from 30 to 40, inclusive, and y is the number of EVEN integers from 30 to 40, inclusive, what is the value of x+y ?
[ "391", "281", "591", "601" ]
A
sum s= n/2{2a+(n-1)d} = 11/2{2*30+ (11-1)*1} =11*35=385 =X number of even number =( 40-30)/2 +1 = 6= Y X+Y = 385+6 =391 C
AquaRat_train
What is studied to understand gene expression patterns in cells?
[ "rna", "protein", "dna", "mutations" ]
A
RNA is studied to understand gene expression patterns in cells. RNA is naturally very unstable because enzymes that break down RNA are commonly present in nature. Some are even secreted by our own skin and are very difficult to inactivate. Similar to DNA extraction, RNA extraction involves the use of various buffers an...
SCiQ_train
What is the unique layer of nerve cells covering the cerebrum in mammals' brains called?
[ "the midbrain", "the neocortex", "the neural", "cerebral cortex" ]
B
The brains of all mammals have a unique layer of nerve cells covering the cerebrum. This layer is called the neocortex (the pink region of the brains in Figure above ). The neocortex plays an important role in many complex brain functions. In some mammals, such as rats, the neocortex is relatively smooth. In other mamm...
SCiQ_train
What is the process by which plants capture the energy of sunlight and use carbon dioxide from the air (and water) to make their own food called?
[ "photochemistry", "spermatogenesis", "atherosclerosis", "photosynthesis" ]
D
Recall that eukaryotic organisms also include animals, protists, and fungi. Eukaryotes have cells with nuclei that contain DNA, and membrane-bound organelles, such as mitochondria. Photosynthesis is the process by which plants capture the energy of sunlight and use carbon dioxide from the air (and water) to make their ...
SCiQ_train
Look at this series: 544, 509, 474, 439, ... What number should come next?
[ "206", "306", "404", "408" ]
C
E 404 This is a simple subtraction series. Each number is 35 less than the previous number.
AquaRat_train