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Question: In the exam, Yul-jeon did better than Myeong-ryun and did worse than Cheon-chun. If Myeong-ryun is the 9th and Cheoncheon is the 7th, what rank is Yul-jeon? Answer: If Yul-jeon did better than Myeong-ryun, who is 9th, and worse than Cheon-chun, who is 7th, then Yul-jeon must be ranked 8th.
Question: There is a cube-shaped gift box. If the area of the wrapping paper used to wrap this gift box without overlapping is 600, find the volume of this gift box. Answer: To find the volume of the cube-shaped gift box, we first need to determine the length of one side of the cube. Since the wrapping paper covers the...
Question: How many three-digit numbers can you make using the numbers 2, 3, and 8? However, the same number can be used multiple times. Answer: Since repetition is allowed, each of the three positions in the three-digit number can be filled with any of the three given numbers (2, 3, or 8). For the first digit (the hu...
Question: Yeongchan divided the apple into 3 equal slices and ate one slice. Minhyuk divided an apple of the same size into 12 equal slices. How many slices of apples does Minhyuk need to eat to eat the same amount of apples as Yeongchan? Answer: Yeongchan ate 1 out of 3 equal slices of an apple, which means he ate 1/3...
Question: There were 20 tangerines each in five different baskets. After a few days, I noticed that some of the tangerines were rotten, so when I removed the rotten tangerines, the number of tangerines in the baskets became 10, 18, 17, 13, and 16, respectively. How many baskets contain 13 or fewer tangerines? Answer: F...
Question: When we subtract 28 from the product of 4 and some number, divide it by 7 and add 12, we get 36. Find this number Answer: Let's denote the unknown number as x. According to the problem, we have the following equation: ((4 * x) - 28) / 7 + 12 = 36 Now, let's solve for x step by step. First, we'll isolate t...
Question: What is the largest number among three-digit numbers that used each of 8, 0, and 7 once? Answer: The largest three-digit number using each of the digits 8, 0, and 7 exactly once would be formed by placing the largest digit in the hundreds place, the next largest in the tens place, and the smallest in the ones...
Question: What is the smallest number among the four numbers 5, 8, 1, and 2? Answer: The smallest number among 5, 8, 1, and 2 is 1.
Question: You want to connect 25 centimeters (cm) long tapes by overlapping the next tape by 3 centimeters (cm). What is the total length in centimeters (cm) of 64 sheets of tape? Answer: To calculate the total length of 64 sheets of tape when each tape is 25 cm long and each subsequent tape overlaps the previous one b...
Question: The same color stones cannot be distinguished. How many ways can you arrange 2 white and 1 black stones differently? Answer: Since the white stones are indistinguishable from each other and there is only one black stone, we can consider the different arrangements based on the position of the black stone. The...
Question: The cube-shaped dice have the numbers 1 through 6 written on them. If the numbers written on the opposite side add up to 7, what is the number written on the side opposite to 3? Answer: If the numbers on opposite sides of the die add up to 7 and you want to know the number opposite to 3, you simply subtract 3...
Question: If the radius of the wheel is 7 centimeters (cm), how many centimeters (cm) is the diameter of the wheel? Answer: The diameter of a wheel is twice the radius. So, if the radius of the wheel is 7 centimeters, the diameter would be: Diameter = 2 Γ— Radius Diameter = 2 Γ— 7 cm Diameter = 14 cm Therefore, the dia...
Question: The number is in between 2 and 5 and a single digit number less than 4. Find what the number is. Answer: The number must be greater than 2 and less than 5, and it must also be a single-digit number less than 4. The only number that fits all these conditions is 3.
Question: Eunji is jumping a rope in the 10th row from the left, the 8th row from the right, the 3rd row from the front, and the 12th row from the back. If the number of students standing in each row is the same, how many students are jumping ropes? Answer: To find out the total number of students jumping ropes, we nee...
Question: Find the number of sides of a polygon of which one diagonal can be drawn from one vertex. Answer: If only one diagonal can be drawn from one vertex, it means that the diagonal connects the given vertex to the non-adjacent vertex. In a polygon, the minimum number of sides required to have a non-adjacent vertex...
Question: After putting 6 books each in a small box weighing 220 grams (g), and then putting 9 of these small boxes in a large box weighing 250 grams (g), the weight was 13.3 kilograms (kg). If each book weighs the same, how many grams (g) does one book weigh? Answer: First, let's convert the total weight from kilogram...
Question: There are two circles A and B of different sizes. The diameter of circle A is 80 centimeters (cm). The radius of circle A is 4 times the radius of circle B. What is the radius of circle B? Answer: The diameter of circle A is 80 cm, so the radius of circle A is half of that, which is 40 cm. If the radius of c...
Question: In PE class, the students lined up in order of shortest height: Taehyung, Minji, Jiyoung, Jinhyung, and Jingook. Who is the 3rd shortest person? Answer: The third shortest person in the line is Jiyoung.
Question: Find the difference between the largest number and the smallest number among 0.12, 0.23, and 0.22. Answer: The largest number among 0.12, 0.23, and 0.22 is 0.23. The smallest number among 0.12, 0.23, and 0.22 is 0.12. To find the difference, subtract the smallest number from the largest number: 0.23 - 0.12 ...
Question: There are 57 roses and 82 tulips in the flower bed. There are 13 more tulips than the sum of roses and lilies. How many lilies are in the flower bed? Answer: Let's denote the number of lilies as L. According to the information given, the number of tulips is 13 more than the sum of the number of roses and lil...
Question: Yoongi collected 4. If Jungkook collected the sum of 6 and 3, who has the bigger number? Answer: Jungkook collected the sum of 6 and 3, which is 9. Since Yoongi collected 4, Jungkook has the bigger number.
Question: If there are 8 2-won bills and 2 1-won bills, how much is the total? Answer: To find the total amount, you need to multiply the number of each type of bill by its value and then add the results together. For the 2-won bills: 8 bills * 2 won/bill = 16 won For the 1-won bills: 2 bills * 1 won/bill = 2 won No...
Question: Namjoon has 35 (a) books. Also, he has 16 fewer (b) books than (a) books, and 35 books more (c) books than (b) books. How many books does Namjoon have in all? Answer: Let's break down the information given: (a) Namjoon has 35 books. (b) Namjoon has 16 fewer books than (a), so he has 35 - 16 = 19 books. (c) N...
Question: Seokjin and Taehyung have 78 and 81 candies, respectively. Find the one with the most candy. Answer: Taehyung has 81 candies, which is more than Seokjin's 78 candies. Therefore, Taehyung has the most candy.
Question: How many out of 1/4, 0.7, 2/3, 0.4, 2/5 are greater than 0.5? Answer: To determine which of the given numbers are greater than 0.5, we need to compare each number to 0.5. 1/4 = 0.25, which is less than 0.5. 0.7 is greater than 0.5. 2/3 is approximately 0.6667, which is greater than 0.5. 0.4 is less than 0.5....
Question: Eunji has 21 loaves of bread and Minyoung has 13 loaves. Who has more bread? Answer: Eunji has more bread because she has 21 loaves compared to Minyoung who has 13 loaves.
Question: At one bus stop, buses 1 through 54 stop. Find how many times the number 5 occurs in bus numbers that stop at this stop. Answer: To find out how many times the number 5 occurs in bus numbers from 1 through 54, we need to count all the occurrences of the digit 5 in both the tens and units places. First, let's...
Question: Yoongi caught 5 frogs. If he caught 2 more frogs, how many frogs did Yoongi catch? Answer: If Yoongi caught 5 frogs and then caught 2 more frogs, he would have caught a total of 5 + 2 = 7 frogs.
Question: There are three different numbers A, B, and C. Find A from the three-digit addition formula ABC+ABC+ABC=888. Answer: Let's denote A, B, and C as the digits of a three-digit number. When we add the same three-digit number three times, we are essentially multiplying it by 3. So, the equation ABC + ABC + ABC = 8...
Question: When all three natural numbers 1, 6, and 8 are used to form a natural number less than 1000, find the sum of the smallest number and the third smallest number. Answer: To form the smallest number using the digits 1, 6, and 8, we should arrange them in ascending order: 168. To find the third smallest number, ...
Question: Gray cats are heavier than white cats and lighter than black cats. Yellow cats are the lightest. Which color is the heaviest among gray, white, black and yellow cats? Answer: Black cats are the heaviest among gray, white, black, and yellow cats.
Question: It is 3.97 kilometers (km) from Kunwoo's house to the school, and it is 4028 meters (m) from Seohyeon's house to the school. Find a friend whose distance from home to school is longer. Answer: To compare the distances from Kunwoo's and Seohyeon's houses to the school, we need to convert one of the distances t...
Question: The volume of the cube-shaped box is 729 cubic centimeters (cm). At this time, how many centimeters (cm3) is the length of one corner of the box? Answer: The volume of a cube is calculated by raising the length of one of its sides to the power of three (since a cube has equal sides). This can be represented b...
Question: There is a cube whose perimeter of a side are 32 centimeters (cm). What is the volume of this cube in cubic centimeters? Answer: The perimeter of a side of a cube refers to the total length of the edges that make up one face of the cube. Since a cube has four edges on each face, we can divide the given perime...
Question: What is the number of possible two-digit numbers that you can make using two different numbers from 1, 2, 3, 4, 5, and 6? Answer: To form a two-digit number using two different numbers from the set {1, 2, 3, 4, 5, 6}, we need to consider the number of ways we can choose the first digit and the number of ways ...
Question: Given that the area of a trapezoid is 56 square centimeters (cm), the top side is 5 centimeters (cm), and the bottom side is 9 centimeters (cm), what is the height of the trapezoid in centimeters (cm)? Answer: The area of a trapezoid can be calculated using the formula: Area = (1/2) * (sum of the lengths of ...
Question: B is greater than 3 and less than 150, and it is a divisor or multiple of 36. If you were to list all the possible numbers for B, starting with the smallest number, what would be the 5th number from the right? Answer: To find the possible numbers for B, we need to list the divisors and multiples of 36 that ar...
Question: Donghyeon's ranch has bulls and black cows. Bulls and black cows both eat 3 barrels of feed. To feed all these cows, Donghyun bought 8 bundles of 15 and 60 individual feeds. If the feeds are just the right amount, and there are 52 bulls, how many black cows are there? Answer: First, let's calculate the total ...
Question: There is one triangle. The length of the hypotenuse and base of this triangle is 15 centimeters (cm) and 9 centimeters (cm), respectively. Find the area. Answer: To find the area of a right-angled triangle, we can use the formula: Area = (Base * Height) / 2 However, we only have the length of the hypotenuse...
Question: What is the smallest 5-digit number that is a multiple of 3 and a multiple of 4? Answer: To find the smallest 5-digit number that is a multiple of both 3 and 4, we need to find the least common multiple (LCM) of 3 and 4 that is a 5-digit number. The LCM of 3 and 4 is 12, because 12 is the smallest number tha...
Question: How many faces does a prism have if the sum of its edges and vertices is 30? Answer: Let's use Euler's formula to solve this problem. Euler's formula states that for any convex polyhedron (which includes prisms), the number of faces (F), vertices (V), and edges (E) are related by the following equation: F + ...
Question: There is a quadrangular pyramid whose edges have the same length. If the sum of the lengths of the edges is 14.8 meters (m), how many meters (m) is the length of one edge? Answer: A quadrangular pyramid, also known as a square pyramid, has a square base and four triangular faces that meet at a single point (t...
Question: Five pieces of tape, every 2.7 meters (m) long, were stacked so that there was an overlap of 0.3 meters (m). If you divide this spliced tape into 6 equal parts, what is the length of each equal part? Answer: First, let's calculate the total length of the tape when the five pieces are stacked with an overlap o...
Question: There is no child who cannot do either of A and B. If there are 38 children who can do A and 29 children who can do B and the total number of children is 48, how many children can do both? Answer: Let's denote the number of children who can do both A and B as X. According to the problem, every child can do a...
Question: Find the sum of all numbers greater than or equal to 30, less than or equal to 50, and that are multiples of 6. Answer: To find the sum of all numbers greater than or equal to 30 and less than or equal to 50 that are multiples of 6, we first need to identify these numbers. The multiples of 6 in this range ar...
Question: It is said that a factory produces 230 TVs on average. Find how many TVs are produced in 15 days. Answer: To find out how many TVs are produced in 15 days, you would multiply the average number of TVs produced in one day by the number of days. Number of TVs produced in one day = 230 Number of days = 15 Tota...
Question: You mistakenly subtracted 13/5 from a number instead of adding 13/5 and got 9/7. How much is it when calculated correctly? Answer: If you mistakenly subtracted 13/5 from a number and got 9/7, we can set up an equation to find the correct result when 13/5 is added instead. Let's call the original number x. T...
Question: There are five numbers 10, 11, 12, 13, and 14. What is the product of the 3rd largest number and the 2nd largest number? Answer: The five numbers are 10, 11, 12, 13, and 14. The 3rd largest number is 12. The 2nd largest number is 13. The product of the 3rd largest number (12) and the 2nd largest number (13)...
Question: If you put 10 pieces of square paper in each horizontal and vertical line without gaps, you get a large square. Find the number of pieces of paper placed around the perimeter. Answer: To find the number of pieces of paper placed around the perimeter of the large square, we need to count the pieces on each sid...
Question: Among five numbers 1.4, 9/10, 1.2, 0.5, and 13/10, what is the sum of the numbers greater than 1.1? Answer: To find the sum of the numbers greater than 1.1, we first need to identify which numbers are greater than 1.1. The numbers given are: 1.4 9/10 1.2 0.5 13/10 Let's convert the fractions to decimal to m...
Question: Jongkook drinks milk every day. He drank 3 liters (L) and 7 milliliters (γŽ–) on the first day, a few milliliters (γŽ–) on the second day, and 840 milliliters (γŽ–) on the third day. As he drank 6 liters (L) and 30 milliliters (γŽ–) in total, how many milliliters (γŽ–) of milk did Jongkook drink on the second day? Answ...
Question: I made an equilateral triangle with a wire 63 cm (cm) long, and there was neither excess nor shortage of wire. How many centimeters (cm) is the length of one side of an equilateral triangle? Answer: An equilateral triangle has all three sides of equal length. If you made an equilateral triangle with a wire th...
Question: Five animals are on the way: Rat, Cow, Tiger, Rabbit, Dragon and Snake. The mouse with the best eye sight should come first, and the snake with the longest tail should come last. Find the number of all cases in which five animals form a line. Answer: The problem statement seems to have a small error. It menti...
Question: On the first day of participating in the group activity, Miju met 11 new friends and shook hands. If Mijoo and her friends shook hands once, how many times did they all shake hands? Answer: If Miju met 11 new friends and shook hands with each of them once, then Miju shook hands 11 times. However, we also need...
Question: While painting, Hyungjun used half of the paint to paint the house and he used 5 more than 1/3 of the remaining paint to paint the fence. If there are 5 cans of paint left, how many cans of paint did Hyeongjun have to begin with? Answer: Let's denote the total number of paint cans Hyungjun had initially as X....
Question: Joohan is about to choose a hat and pair of shoes to wear tomorrow. Joohan has 4 hats and 3 pairs of shoes. In how many ways can Juhan choose one hat and one pair of shoes? Answer: To find the total number of ways Joohan can choose one hat and one pair of shoes, we can use the fundamental counting principle. ...
Question: 20 students stood in a line. Jungkook stood third in line, and Yoongi stood right behind Jungkook. How many students are standing behind Yoongi? Answer: If Jungkook stood third in line, that means there are 2 students in front of him. Since Yoongi stood right behind Jungkook, Yoongi is the fourth student in l...
Question: When there are numbers from 100 to 200, what is sum of odd numbers in the range? Answer: To find the sum of odd numbers between 100 and 200, we first need to identify the first and last odd numbers in this range. The first odd number after 100 is 101, and the last odd number before 200 is 199. Now, we can u...
Question: Divide a picture into four sections, and try to color each one with red, blue, green, and yellow. How many times are there where you paint them all different colors? Answer: To divide a picture into four sections and color each one with red, blue, green, and yellow, you have to consider the different combinat...
Question: The price of clay is 17.25 won per gram (g). If Seungjun buys one 1000 gram (g) clay and one 10 gram (g) clay, how much should he pay? Answer: To find out how much Seungjun should pay, we need to calculate the total cost of the clay he buys. First, we calculate the cost of the 1000 gram clay: 1000 grams * 1...
Question: There are 45 ducks and 28 geese on the farm. Also, hens are 13 less than ducks, and roosters are 9 more than geese. How many chickens are there in the farm in total? Answer: First, let's find out how many hens there are. Since hens are 13 less than ducks, we subtract 13 from the number of ducks: Number of he...
Question: There are numbers 0.8, 1/2, 0.9, and 1/3. Find the largest of the given numbers that are less than 0.6. Answer: To find the largest number less than 0.6, we need to compare the given numbers to 0.6. First, let's convert the fractions to decimals to make the comparison easier: - 1/2 as a decimal is 0.5 - 1/3 ...
Question: 60 presses printed 40680 sheets of paper in print shop A and 55 presses printed 37510 sheets of paper in print shop B. Which printshop printed more sheets per press on average? Answer: To find out which print shop printed more sheets per press on average, we need to divide the total number of sheets printed b...
Question: Yoojung gave 5 notebooks she had at first to her older sister, and then gave half of the remaining ones to her younger sister. She counted the number of notebooks left at the end, and it was 4. How many notebooks did Yoojung have at first? Answer: Let's denote the number of notebooks Yoojung had at first as N...
Question: Yoongi wants to add a four-digit number to 57. Yoongi confused 9 as a 6 in the units digit of a four-digit number. When the sum obtained by Yoongi is 1823, find the correct calculation result. Answer: Let's denote the correct four-digit number as ABCD, where A, B, C, and D represent the thousands, hundreds, t...
Question: We want to select 4 out of 10 distinguishable balls. How many ways are there to choose a ball? Answer: To select 4 out of 10 distinguishable balls, you can use the combination formula, which is given by: \[ C(n, k) = \frac{n!}{k!(n-k)!} \] where \( n \) is the total number of items to choose from, \( k \) i...
Question: Eunji bought a 350 won snack at the mart with the money she had and received 800 won from her mother as an allowance. I bought a pencil with half of the remaining money, and I had 550 won left. How much money did Eunji have at first? Answer: Let's break down the problem step by step: 1. Eunji bought a snack ...
Question: When 1/6Γ—1/3=1/(AΓ—3)=1/B, what is the sum of A and B? Answer: Let's solve the equation step by step. First, we calculate 1/6 Γ— 1/3: 1/6 Γ— 1/3 = 1/(6Γ—3) = 1/18 Now we have: 1/18 = 1/(AΓ—3) = 1/B Let's find A first: 1/18 = 1/(AΓ—3) This means that AΓ—3 = 18, so: A = 18/3 A = 6 Now let's find B: 1/18 = 1/...
Question: A number is divisible by 5 and the quotient is 96. What is the result of adding 17 to the number and then multiplying by 69? Answer: If a number is divisible by 5 and the quotient is 96, then the number is: 5 * 96 = 480 Now, if we add 17 to this number, we get: 480 + 17 = 497 Finally, if we multiply this ...
Question: There is a pyramid with a regular hexagon at the base and a side edge measuring 8 centimeters (cm). If the sum of the lengths of all the edges of this pyramid is 120 centimeters (cm), what is the length of one edge of the base in centimeters (cm)? Answer: Let's denote the length of one edge of the base hexago...
Question: A fishbowl containing an object called (A) has been filled with water to a height of 16 centimeters (cm). If the length of one corner of the fishbowl is 20 centimeters (cm) and if (A) is removed, the height is 9 centimeters (cm), then what is the volume of the (A)? Answer: To find the volume of object (A), we...
Question: Add 8 to a certain number and multiply by 3 to get 36. Find this particular number. Answer: Let's call the certain number "x". According to the problem, if we add 8 to x and then multiply the result by 3, we get 36. We can write this as an equation: 3 * (x + 8) = 36 Now, let's solve for x: First, divide bo...
Question: If the lengths of the two sides of a parallelogram are 10 centimeters (cm) and 7 centimeters (cm), how many centimeters (cm) is the sum of the lengths of the four sides? Answer: In a parallelogram, opposite sides are equal in length. Therefore, if one side is 10 cm, the opposite side is also 10 cm. Similarly,...
Question: How many odd numbers are there when you press 2 of the 5 buttons which are 0, 1, 2, 3, and 4 on the calculator to create a two-digit integer? Answer: To create a two-digit odd number by pressing two of the five buttons (0, 1, 2, 3, 4), we need to consider that the last digit (ones place) of the number must be...
Question: When there are 57 boys and 82 girls on the playground, the number of female students is 13 more than male students plus teachers. How many teachers are there in the playground? Answer: Let's denote the number of teachers on the playground as T. According to the information given, the number of female student...
Question: When there are 4 numbers of 0.8, 1/2, 0.5, and 1/3, how many of them are less than or equal to 3? Answer: All of the numbers you've listed are less than 3. 0.8 is less than 3. 1/2 (which is 0.5) is less than 3. 0.5 is less than 3. 1/3 (which is approximately 0.333) is less than 3. So, all 4 numbers are les...
Question: Yoojeong gave Eunji 8 of the marbles she had at first, and there are 24 left. How many marbles did Yoojeong have before giving them to Eunji? Answer: If Yoojeong gave Eunji 8 marbles and still has 24 left, we can find out how many marbles Yoojeong had at first by adding the 8 marbles she gave away to the 24 m...
Question: How many of 0.8, 1/2, and 0.9 are greater than 0.4? Answer: To determine how many of the numbers 0.8, 1/2, and 0.9 are greater than 0.4, we can compare each number to 0.4. 0.8 is greater than 0.4. 1/2 (which is equal to 0.5) is greater than 0.4. 0.9 is greater than 0.4. All three numbers (0.8, 1/2, and 0.9)...
Question: How many two-digit numbers are there that are greater than 29 and less than 36? Answer: The two-digit numbers that are greater than 29 and less than 36 are: 30, 31, 32, 33, 34, and 35. There are 6 two-digit numbers that meet the criteria.
Question: Find the difference between the smallest number and the third smallest number you can make by using all the stones 1, 6, and 8 once each to make a three-digit number. Answer: To find the smallest number using the digits 1, 6, and 8, we would arrange them in ascending order: 168. To find the third smallest nu...
Question: The base of a pyramid with A sides is an octagon. What number fits in A? Answer: An octagon has 8 sides. Therefore, the number that fits in A is 8.
Question: 4 out of 40 dolls are defective. When you send the non-defective remainder out to four stores equally, how many should you send per store? Answer: First, we need to find out how many non-defective dolls there are. If 4 out of 40 dolls are defective, then the number of non-defective dolls is: 40 (total dolls)...
Question: When you mistakenly add 30 which should have been multiplied to by number, you get 86. Find out how much it is if you calculate it correctly. Answer: Let's denote the original number as x. According to the mistake, you added 30 to x, which can be written as: x + 30 = 86 Now, let's solve for x: x = 86 - 30 x...
Question: I have a rectangular piece of cloth. If the length of this cloth is 150 centimeters (cm) and the area is 3 square meters (m2), how many centimeters (cm) is the width? Answer: First, we need to convert the area from square meters to square centimeters because the length is given in centimeters. 1 square mete...
Question: What is the smallest number that can be formed by using natural numbers 2 and 4? Answer: The smallest number that can be formed using the natural numbers 2 and 4 is simply 2, as it is the smaller of the two given numbers. If you are looking to combine the digits 2 and 4 to form a number, the smallest number y...
Question: The car ran through the school zone at 27 kilometers per hour (km) for 50 seconds. How many meters (m) did the car move? Answer: To find out how many meters the car moved, we need to convert the speed from kilometers per hour to meters per second and then multiply by the time in seconds. First, convert the s...
Question: From the four types of marbles - red, blue, yellow, and green, find the number of cases in which you select 21 balls allowing overlaps but draw 3 or more balls from each color. Answer: To solve this problem, we can use the principle of inclusion-exclusion along with the stars and bars method to count the numb...
Question: At Eunji's school, class (A) planted 35 trees, class (B) planted 6 more trees than class (A), and class (C) planted 3 less trees than class (A). What is the average number of trees planted by three classes (A), (B), and (C)? Answer: To find the average number of trees planted by the three classes, we first ne...
Question: Jinsu has 125 dice, each with an edge of 2 centimeters (cm). If these dice are stacked to form a cube, what is the volume of the cube? Answer: To form a cube with the dice, we need to determine how many dice would be on each edge of the cube. Since a cube has equal sides, we can take the cube root of the tota...
Question: An oil drum in the shape of a cuboid with a height of 5 meters (m) and 20 centimeters (cm) and two sides of the bottom each measuring 6 meters (m), 40 centimeters (cm), and 9 meters (m), is filled with oil. We're going to split it up into several barrels of oil into a oil drum with a volume of 1 cubic meter (...
Question: 1250 coins are scattered on the floor. If the number of coins with heads is 124 more than the number of coins with tails, find the number of coins with tails. Answer: Let's denote the number of coins with tails as T and the number of coins with heads as H. According to the problem, we have two pieces of infor...
Question: I had to multiply a number by 7 but mistakenly divided it by 6 instead to get 12. What is the correctly calculated value? Answer: Let's call the number you were supposed to multiply by 7 as "x". You mistakenly divided x by 6 and got 12. So the equation for the mistake is: x / 6 = 12 To find x, you multiply...
Question: If the radius of a circle is 4 centimeters (cm), what is the diameter of the circle in centimeters (cm)? Answer: The diameter of a circle is twice the radius. So, if the radius of the circle is 4 centimeters, the diameter would be: Diameter = 2 Γ— Radius Diameter = 2 Γ— 4 cm Diameter = 8 cm Therefore, the dia...
Question: Suhwan drinks 0.2 liters (L) of milk three times a day. How many liters (L) of milk does Suhwan drink in a week? Answer: Suhwan drinks 0.2 liters of milk three times a day. To find out how much milk Suhwan drinks in a day, we multiply the amount of milk he drinks per time by the number of times he drinks it: ...
Question: There are two types of letter paper. Letter A is a rectangle with a width of 6 centimeters (cm) and a length of 9 centimeters (cm) long, and letter paper B is a square shape with a width of 8 centimeters (cm) and a length of 8 centimeters (cm) long. If both letter papers are decorated with stickers of the sam...
Question: A and B are two-digit numbers. A is 8 less than 23. The number that is 7 greater than B is 18. Find the value of A-B. Answer: Let's first find the value of A. Since A is 8 less than 23, we can write: A = 23 - 8 A = 15 Now, let's find the value of B. We are told that the number that is 7 greater than B is 18...
Question: Which number is the 2nd smallest among 5, 8, and 4? Answer: The second smallest number among 5, 8, and 4 is 5.
Question: You need to multiply a number by 5 and then add 14, but you mistakenly subtracted 5 and added 14, getting 39 as an answer. Find the sum of the correctly calculated and incorrectly calculated values. Answer: Let's denote the original number as \( x \). The correct calculation should be: \[ \text{Correct Value...
Question: Seulgi has 23 red marbles. Miran has 34 blue marbles and Hohyun has 32 yellow marbles. Who has more marbles among Seulgi and Hohyun ? Answer: Hohyun has more marbles than Seulgi because Hohyun has 32 yellow marbles while Seulgi has 23 red marbles.
Question: Misoo and Joohee are trying to deliver a total of 2 liters (L) and 100 milliliters (γŽ–) of milk. How many milliliters (ml) of milk must Misoo deliver if Misoo delivers 200 milliliters (ml) more milk than Joohee does? Answer: First, let's convert the total amount of milk they need to deliver from liters and mil...