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Question: Adding 36 to a number gives 71. How much is a number plus 10? Answer: Let's call the unknown number "x". According to the information given: x + 36 = 71 To find the value of x, we subtract 36 from both sides of the equation: x + 36 - 36 = 71 - 36 x = 35 Now, to find the value of the number plus 10, we add...
Question: There are 1 green ball and 3 indistinguishable yellow balls. How many different ways can you place these 4 balls in a row? Answer: To determine the number of different ways to place these 4 balls in a row, we can use the concept of permutations with indistinguishable objects. Since there is 1 green ball (G) ...
Question: There are the same number of cars in each row. Red cars are in the 14th row from the front, 19th row from the left, 11th row from the back, and 16th row from the right. How many cars are there in total? Answer: Let's denote the total number of rows from front to back as F and the total number of rows from lef...
Question: You are comparing the heights of 20 students. If there are 11 students shorter than Yoongi, how many students are taller than Yoongi? Answer: If there are 11 students shorter than Yoongi, then Yoongi is taller than those 11 students. Since there are 20 students in total, we subtract the 11 students shorter th...
Question: A farmer raises 49 chickens and 37 ducks on a farm. The combined number of ducks and rabbits is 9 more than the number of chickens. How many rabbits are there? Answer: Let's denote the number of rabbits as R. According to the information given, the combined number of ducks and rabbits is 9 more than the numb...
Question: If Jeong-hyeok's age is 1 year less than 1/4 of his uncle's age and his uncle's age is 5 years less than 5 times Jeong-hyeok's age, how old is Jeong-hyeok? Answer: Let's denote Jeong-hyeok's age as J and his uncle's age as U. According to the first statement, Jeong-hyeok's age is 1 year less than 1/4 of his ...
Question: A mobile can be made with 4 millimetres (mm) of wire. After making several mobiles of the same size using 117.6 millimetres (mm) of wire, how many centimetres (cm) of wire are left? Answer: First, we need to determine how many mobiles can be made with 117.6 mm of wire. Since each mobile requires 4 mm of wire,...
Question: 54 square-shaped pieces of colored paper were attached to dice with a side of 12 centimeters (cm) and then there was no empty space. Find the length of one side of this colored paper. Answer: To cover a cube (dice) with square-shaped pieces of paper without any empty space, we need to cover all six faces of t...
Question: How many circles with a radius of 2 centimeters (cm) can be drawn on a piece of paper that is 20 centimeters (cm) wide and 16 centimeters (cm) long? Answer: To determine how many circles with a radius of 2 cm can fit on a piece of paper that is 20 cm wide and 16 cm long, we need to consider the diameter of ea...
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 a total of 6 two-digit numbers in this range.
Question: The amount of paint used to paint a sphere with a radius of 3 centimeters (cm) equals the amount of paint used to paint a circle. Find the radius of the circle. Answer: To find the radius of the circle that requires the same amount of paint as the sphere, we need to equate the surface area of the sphere to th...
Question: This candle is currently 48 centimeters (cm) long. If it was originally 1.33 times the current length, find the length of the original candle. Answer: To find the original length of the candle, we need to divide the current length by the factor that it has decreased. Since the current candle is 48 cm long and...
Question: There are three different numbers A, B, and C. A is 38 greater than 18, and B is A minus 26. If C is equal to the quotient of B divided by 3, which of the three numbers is the smallest? Answer: First, let's find the value of A: A = 38 + 18 A = 56 Now, let's find the value of B: B = A - 26 B = 56 - 26 B = 3...
Question: Jungkook has a card with the number 0.8 on it, Yoongi has 1/2, and Yoojeong has 0.9. How many people have number cards less than 0.3? Answer: None of them have number cards less than 0.3. Jungkook's card is 0.8, which is greater than 0.3. Yoongi's card is 1/2, which is equal to 0.5 when converted to a deci...
Question: Jungkook has 5 red balls, 4 blue balls, and 3 yellow balls. When Yoongi gives Jungkook 1 red ball, how many blue balls does Jungkook have? Answer: Jungkook originally has 4 blue balls. When Yoongi gives Jungkook 1 red ball, it does not affect the number of blue balls Jungkook has. Therefore, Jungkook still ha...
Question: People are standing in a line at an amusement park. If Eunji is able to ride the ride in 6th place, and there are 7 people behind Eunji, how many people are in line to ride the ride? Answer: If Eunji is in 6th place, that means there are 5 people in front of her. Since there are 7 people behind her, we add th...
Question: I bought 3 sets of top and bottom pajama sets and paid 21,000 won. If the top costs 300 won more than the bottom, what is the price of the bottom? Answer: Let's denote the price of the bottom as B won and the price of the top as T won. According to the information given, the top costs 300 won more than the b...
Question: When the grandpa's age was 71 last year, Jung-min was 8. Find how many times the grandpa's age is Jung-min's age this year. Answer: If grandpa was 71 years old last year, this year he will be 71 + 1 = 72 years old. If Jung-min was 8 years old last year, this year he will be 8 + 1 = 9 years old. To find out ...
Question: Among the people who came to watch the soccer game, there were 1518 adults, and 536 of them were women. There were 525 more students than adults, 1257 of whom were male. How many women came to watch a soccer game? Answer: To find out the total number of women who came to watch the soccer game, we need to add ...
Question: You subtracted a particular number from 423 and it became 421. Find the number multiplied by 423 plus 421. Answer: Let's call the particular number you subtracted from 423 as "x". According to the information given: 423 - x = 421 To find the value of x, we can solve the equation: x = 423 - 421 x = 2 Now, ...
Question: There are 156 chocolates in each bag. If you bought 20 bags of these chocolates, find how many chocolates there are in all. Answer: To find the total number of chocolates, you need to multiply the number of chocolates in each bag by the number of bags you bought. Number of chocolates in each bag = 156 Number...
Question: Minji drank 0.26 liters (L) of water in the morning and 0.37 liters (L) in the afternoon. Find how many liters (L) of water Minji drank during the day. Answer: To find the total amount of water Minji drank during the day, we need to add the amount she drank in the morning to the amount she drank in the aftern...
Question: Jungkook picked 25 persimmons. If 3 times the persimmons that Hoseok picked is 4 less than the number of persimmons that Jungkook picked, how many persimmons did Hoseok pick? Answer: Let's denote the number of persimmons Hoseok picked as H. According to the problem, 3 times the persimmons that Hoseok picked ...
Question: There is a ball that bounces 1/10 of the height it is dropped. If this ball is dropped from a height of 15 meters (m), find the height in meters (m) of the third jump round to two decimal places. Answer: To find the height of the third jump, we need to calculate the height after each bounce. First jump: The ...
Question: It is said that out of 1256 Go stones, there are 408 more white ones than black ones. Find the number of black Go stones. Answer: Let's denote the number of black Go stones as B and the number of white Go stones as W. According to the problem, we have two pieces of information: 1. The total number of Go ston...
Question: If the width of a rectangular desk is 9 centimeters (cm) and the perimeter is 46 centimeters (cm), what is the length of the desk? Answer: To find the length of the desk, we can use the formula for the perimeter of a rectangle, which is: Perimeter = 2 * (length + width) Given that the perimeter is 46 cm an...
Question: How many A's from 1 to 9 make A345>5555 true? Answer: The inequality A345 > 5555 means that we need to find a digit A (from 1 to 9) such that when placed in the thousands place of the number 345, it makes the number greater than 5555. Let's place each digit from 1 to 9 in the thousands place and see which on...
Question: Which shape has the greater area: a square with a side of 4 centimeters (cm) or a triangle with a base of 6 centimeters (cm) and a height of 4 centimeters (cm)? Answer: To determine which shape has the greater area, we need to calculate the area of both the square and the triangle. For the square: The area o...
Question: The quotient of 172 divided by this number is equal to the quotient of 172 divided by 4 minus 28. Find the number when the remainder of 172 divided by this number is 7. Answer: Let's denote the unknown number as \( x \). According to the problem, the quotient of 172 divided by \( x \) is equal to the quotien...
Question: The six-digit number 14A56A is a multiple of 4 and also a multiple of 3. Find this six-digit number. Answer: To find the six-digit number 14A56A that is a multiple of both 4 and 3, we need to consider the rules for divisibility by these numbers. For a number to be divisible by 4, the last two digits of the n...
Question: The width of the monitor is 12 centimeters (cm) and the circumference is 38 centimeters (cm). Find the height of the monitor. Answer: To find the height of the monitor, we need to know the shape of the monitor. If we assume the monitor is rectangular (which is a common shape for monitors), then the circumfere...
Question: There were 4 carrots and a few cucumbers in a total of 10. Today your mother bought 2 more cucumbers. How many cucumbers are there now? Answer: Initially, there were 4 carrots and a few cucumbers in a total of 10 vegetables. To find out how many cucumbers there were initially, we subtract the number of carrot...
Question: There is a prism whose base side is a regular triangle with sides of 10 centimeters (cm). If the sum of the lengths of all the edges of this prism is 84 centimeters (cm), what is the height of the prism in centimeters (cm)? Answer: A triangular prism has 9 edges in total: 3 edges for the base triangle, 3 edge...
Question: Yoongi tried to add a three-digit number to 57. Yoongi misread the 9 in the ones in the three-digit number as 6. When the sum obtained by Yoongi was 823, find the correct calculation result. Answer: Let's denote the three-digit number that Yoongi tried to add as ABC, where A is the hundreds digit, B is the te...
Question: Three of the quadrilateral's four angles measure 75 degrees (angle), 80 degrees (angle), and 120 degrees (angle), respectively. What degree (angle) is the other angle of this rectangle? Answer: The shape mentioned in the question is a quadrilateral, but it is referred to as a rectangle. However, a rectangle h...
Question: There are number-shaped sweets. If there are three in the shape of 3, 0 and 6, you want to put two dalgonas in a row to make it look like a two-digit number. How many can you make in total? Answer: To form a two-digit number with the number-shaped sweets, we can use the three available shapes: 3, 0, and 6. Si...
Question: Jungkook has 0.8 written on a card, and Yoongi has 1/2 written on a card. How many people have number that is greater than 0.3 written on their cards? Answer: Both Jungkook and Yoongi have numbers greater than 0.3 written on their cards. Jungkook has 0.8, which is clearly greater than 0.3. Yoongi has 1/2,...
Question: Juwon has 105.8 meters (m) of wire. If he needs 4 meters (m) of wire to make one mobile, find how many meters (m) of wire are left after making as many mobiles as Juwon can make. Answer: To find out how many mobiles Juwon can make, we need to divide the total length of wire he has by the length of wire needed...
Question: Car A is traveling at 92 kilometers (km) per hour and car B is traveling at 1500 meters (m) per minute. Which car, A or B, is faster? Answer: To compare the speeds of Car A and Car B, we need to convert their speeds to the same units. We can either convert kilometers per hour to meters per minute or meters pe...
Question: 5A8-B14=364. What is A? Answer: To find the value of A, we need to solve the equation: 5A8 - B14 = 364 First, let's rewrite the equation with variables for the unknown digits A and B: (500 + 10A + 8) - (100B + 14) = 364 Now, let's simplify the equation: 510A + 8 - 100B - 14 = 364 Combine like terms: 51...
Question: Find the largest number other than 15 among the divisors of 15. Answer: The divisors of 15 are 1, 3, 5, and 15. Since we are looking for the largest number other than 15, the answer is 5.
Question: In Seokjin's class, 37 students submitted math homework and 42 Korean language homework. If the total number of students is 48 and no student has missed both homework assignments, how many students have completed both homework assignments? Answer: Let's denote the number of students who submitted both math an...
Question: I am trying to make a cube as small as possible by stacking cuboid-shaped boxes that are 8 centimeters (cm) wide, 12 centimeters (cm) long, and 30 centimeters (cm) high in a certain direction. Find the number of boxes needed at this time. Answer: To make a cube using cuboid-shaped boxes, we need to find a com...
Question: Which of the five numbers 1.4, 9/10, 1.2, 0.5, and 13/10 is the largest number less than 1.1? Answer: To determine the largest number less than 1.1, we need to compare each number to 1.1 and find the one that is closest to but not greater than 1.1. Let's convert all the fractions to decimal form to make the ...
Question: You are going to cut a rectangular wooden board that is 24 centimeters (cm) wide by 18 centimeters (cm) long, without any remaining, to make several pieces of the largest square wooden piece of the same size. How many wooden pieces can you make in all? Answer: To make the largest square wooden pieces without ...
Question: Jaeho and Kyunghwan took a walk at the same time. Jaeho walked one hundredth of 10.2 kilometers (km), and Kyunghwan walked 100 meters (m). Who walked more? Answer: First, let's convert Jaeho's distance into meters since Kyunghwan's distance is already given in meters. 1 kilometer is equal to 1000 meters. ...
Question: Hoseok bought the same number of marbles at 80 won each with the money he could buy for several marbles at 100 won each, and he had 260 won left. How many marbles did Hoseok buy? Answer: Let's denote the number of marbles Hoseok bought as \( x \). If Hoseok bought the marbles at 100 won each, he would have s...
Question: I am going to make a 50.5 centimeters (cm) bridge by overlapping three 18 centimeters (cm) wooden blocks in the same length and then joining them together. How many centimeters (cm) should each overlapping section be? Answer: To create a bridge that is 50.5 cm long using three 18 cm wooden blocks, you need to...
Question: You handed out 170 pencils, 268 notebooks, and 120 erasers to each of the students on the playground equally. There were 8 pencils left, 2 notebooks short, and 12 erasers left. What is the maximum number of students that were on the playground? Answer: Let's denote the number of students on the playground as ...
Question: Nine students stand in a line. How many students are standing between the 3rd from the left and the 7th from the left? Answer: If we have nine students standing in a line and we want to find out how many students are standing between the 3rd from the left and the 7th from the left, we can simply count the pos...
Question: A and B are different natural numbers. When A is divided by 17, the quotient is 25 and the remainder is B. Find A when B is the largest number possible. Answer: When A is divided by 17, the quotient is 25 and the remainder is B. This means that A can be expressed as: A = 17 * quotient + remainder A = 17 * 25...
Question: A cube with a side length of 1 meter (m) was cut 3 times each along the horizontal, vertical, and height directions, resulting in 64 small cuboids. What is the sum of the surface areas in square meters (m2) of these small cuboids? Answer: When the cube with a side length of 1 meter is cut 3 times along each d...
Question: There are two numbers A and B. A is the number of 50 plus 7, and B is the number of 6 groups of 10 minus 7. Which number is greater? Answer: Let's calculate A and B: A is the number of 50 plus 7, so: A = 50 + 7 A = 57 B is the number of 6 groups of 10 minus 7, so: B = (6 * 10) - 7 B = 60 - 7 B = 53 Now we ...
Question: Cube is a cube-shaped toy made up of 27 small cubes. If the length of all the edges of the cube is 82.8 centimeters (cm), what is the sum of one edge of the large cube and one edge of the small cube that make up the cube in centimeters (cm)? Answer: If the cube-shaped toy is made up of 27 small cubes, then it...
Question: I have to add 95 to a number, but I accidentally added 65 to a number, and it became 125. Find the correct result. Answer: If you accidentally added 65 to the number and it became 125, you can find the original number by subtracting 65 from 125: 125 - 65 = 60 So the original number was 60. Now, to find the...
Question: The four-digit natural number 5AB0 is divisible by 4 and 5. How many combinations of A and B are possible? Answer: For a number to be divisible by 4, the last two digits of the number must be divisible by 4. Since the number ends in 0, we only need to worry about the digit in the tens place, which is B. The p...
Question: There were 20 tangerines in each of five different baskets. After a few days, you noticed that some of the tangerines were rotten, so when you removed the rotten tangerines, the number of tangerines in the basket became 10, 18, 17, 13, and 16, respectively. If you move the tangerines from the basket containin...
Question: I made an ade with 3 and 2/6 spoons of blueberry syrup and 21/6 spoons of grapefruit syrup. Find the answer with more blueberry syrup or grapefruit syrup. Answer: To determine which syrup you used more of, we need to compare the amounts of blueberry syrup and grapefruit syrup. You used 3 and 2/6 spoons of bl...
Question: You bought 5 erasers for 200 won and 7 pencils for 800 won at a stationery store. Four of your friends are willing to pay the same amount. Find out how much you will have to pay per friend. Answer: First, let's calculate the total amount you spent on the erasers and pencils. You bought 5 erasers for 200 won,...
Question: A box with 6 billiard balls of equal weight weighs 1.82 kilograms (kg). Find the weight in kilograms (kg) of one billiard ball if the empty box weighs 0.5 kilograms (kg). Answer: To find the weight of one billiard ball, we first need to find the total weight of all six billiard balls together. We do this by s...
Question: Hohyun has 32 yellow marbles and Miran has 34 blue marbles. If Seulgi has 23 red marbles, who has more marbles, Seulgi or Hohyun? Answer: Hohyun has 32 yellow marbles, which is more than Seulgi's 23 red marbles. Therefore, Hohyun has more marbles than Seulgi.
Question: There were 7 numbers with an average of 7, and when you changed one of them to 9, the average was 8. What was the original number before changing? Answer: Let's denote the original number that was changed as \( x \). The sum of the original 7 numbers is \( 7 \times 7 = 49 \). When one of the numbers is chan...
Question: You are going to divide 20 by a certain number. If you mistakenly divide 10 by the number, the result is 2. What is the correct calculation result? Answer: If dividing 10 by the number gives you 2, then the number you are dividing by is 5, because 10 divided by 5 equals 2. Now, if you divide 20 by the same n...
Question: There is a fishbowl in the shape of a rectangular cuboid. This fishbowl is 16 centimeters (cm) wide, 14 centimeters (cm) long, and 9 centimeters (cm) high. The water was 4 centimeters (cm) high in this bowl. When a stone was placed in this bowl, the water level rose to 9 centimeters (cm). Find the volume of t...
Question: How many odd numbers are less than 10? Answer: The odd numbers less than 10 are: 1, 3, 5, 7, and 9. There are 5 odd numbers less than 10.
Question: The average length of the 11 sticks is 145.7 centimeters (cm). But if the average of the lengths of two of them is 142.1 centimeters (cm), find the average of the lengths of the remaining bars. Answer: To find the average length of the remaining sticks, we first need to calculate the total length of all 11 st...
Question: Yuna, Eunji, and Minyoung are playing rock-paper-scissors game. Eunji lost to Minyoung and Yuna defeated Minyoung. Who's in last place? Answer: If Eunji lost to Minyoung and Yuna defeated Minyoung, then Eunji is in last place because she lost her game, while Minyoung won against Eunji but lost to Yuna, and Yu...
Question: A cuboid has a square base and a perimeter of 32 centimeters (cm). If the height of a cuboid is 9 centimeters (cm), how many cubic centimeters (cm3) is its volume? Answer: To find the volume of the cuboid, we need to know the length of the sides of the square base and the height of the cuboid. The formula for...
Question: What is the smallest five-digit number divisible by the numbers 2, 3, 8, and 9? Answer: To find the smallest five-digit number divisible by 2, 3, 8, and 9, we need to find the least common multiple (LCM) of these numbers. However, since 8 is a multiple of 2 and 9 is a multiple of 3, we only need to find the L...
Question: A is 14 and B is 24. If we add A to a particular number and multiply it by A, then subtract B, then divide it by B, we get 13. Find that particular number. Answer: Let's denote the particular number as \( x \). According to the problem, we have the following equation: \[ \frac{(A + x) \cdot A - B}{B} = 13 \...
Question: Ryeowoon and Miyeon shared 85 sheets of colored paper. Ryeowoon decided not to have pink-colored paper, and there were 11 sheets of pink-colored paper. Colored paper in every other color was in even numbers to be shared equally by two friends. How many sheets of colored paper did Miyeon get? Answer: If Ryeowo...
Question: Three of the six numbers 0, 1, 2, 3, 4, 5, and 8 have been chosen to form a three-digit number. If you can use the same number more than once, what is the sum of all the possible numbers? Answer: To find the sum of all possible three-digit numbers formed by the digits 0, 1, 2, 3, 4, 5, and 8, we can use a com...
Question: Minjeong put a red ball, a blue ball, an orange ball, and a black ball in order. What is the color of the third ball? Answer: The third ball in the order is an orange ball.
Question: Make the smallest number with the number cards of 1, 4, and 5 one at a time. Answer: To make the smallest number using the number cards 1, 4, and 5, you would arrange them in ascending order. So the smallest number you can make is 145.
Question: I'm trying to make 1000 toys. Assuming that the speed of making toys is the same every day, how many days are left if I have made 100 toys a day for 6 days? Answer: If you have made 100 toys a day for 6 days, you have made a total of: 100 toys/day * 6 days = 600 toys You are trying to make 1000 toys in tota...
Question: You are going to make the largest square out of 60 centimeters (cm) of wire. How many centimeters (cm) should be the length of one side? Answer: To make a square out of wire, we need to divide the total length of the wire by 4, because a square has four equal sides. So, if we have 60 cm of wire, we divide it...
Question: Thirty balls each weighing 0.36 kilograms (kg) are placed in a box. Find how many kilograms (kg) the box without the balls is when the box containing the balls weighed 11.26 killograms (kg). Answer: First, let's find the total weight of the balls. Since each ball weighs 0.36 kg and there are 30 balls, we can ...
Question: How many edges are there on a face of a tetrahedron? Answer: A tetrahedron is a three-dimensional shape with four triangular faces. Each face of a tetrahedron is a triangle, and a triangle has 3 edges. Therefore, there are 3 edges on a face of a tetrahedron.
Question: Students sit in groups of seven, and there are nine groups in each class. If there are 13 classes in this school, how many students are there? Answer: First, calculate the number of students in one group: 7 students/group Then, calculate the number of students in one class: 7 students/group * 9 groups/class ...
Question: You are trying to get 2 balls out of a box containing a red ball, a blue ball, a black ball, and a yellow ball. How many ways are there for balls can be drawn if allowing duplication? However, the order in which the balls are retrieved is not considered. Answer: If we allow duplication, it means that we can d...
Question: Adding 8 consecutive even numbers gives 424. Find the smallest of 8 even numbers. Answer: Let's call the smallest even number "x". Since we're dealing with consecutive even numbers, the next seven even numbers would be x+2, x+4, x+6, x+8, x+10, x+12, and x+14. The sum of these eight consecutive even numbers ...
Question: When a certain number that should be divided by 8 is divided by 7, the quotient is 13 and the remainder is 1. Find the sum of the correctly calculated quotient and remainder. Answer: Let's call the certain number \( N \). According to the problem, when \( N \) is divided by 7, the quotient is 13 and the rema...
Question: You can make one hotteok with 6.64 grams (g) of dough. Find how many hotteoks you can make when you have 212.48 grams (g) of dough. Answer: To find out how many hotteoks you can make with 212.48 grams of dough, you need to divide the total amount of dough by the amount of dough required for one hotteok. So, ...
Question: Find the sum of the second smallest three-digit number and the third smallest three-digit number formed by using all odd numbers from 1 to 5 once. Answer: To form the smallest three-digit numbers using the odd numbers 1 to 5, we need to arrange them in ascending order. The smallest three-digit number we can f...
Question: Taehyung is the 6th shortest student in the class, and Seokjin stands right in front of him when they line up in ascending order. In what position will Seokjin's height be in ordinal number? Answer: If Taehyung is the 6th shortest student in the class and Seokjin stands right in front of him when they line up...
Question: What is the surface area in square centimeters (cm2) of a cube with one edge of 8 centimeters (cm)? Answer: The surface area of a cube is calculated by finding the area of one face and then multiplying it by 6, since a cube has 6 identical faces. The area of one face of a cube is found by squaring the length...
Question: There are a total of three numbers: 0.8, 1/2, and 0.5. What is the largest out of these numbers that is less than 2? Answer: To determine the largest number less than 2 among 0.8, 1/2, and 0.5, we first need to express all numbers in the same format for easy comparison. 0.8 is already in decimal form. 1/2 ca...
Question: Find the fourth smallest four-digit number with using all 4 number cards of 0, 1, 4, and 8 once whose ones digit is 8, and then find the sum of each digit. Answer: To find the fourth smallest four-digit number using the digits 0, 1, 4, and 8 exactly once, with the ones digit being 8, we need to arrange the re...
Question: There are three numbers 0.8, 1/2, and 0.9. How many numbers are less than or equal to 3? Answer: All three numbers, 0.8, 1/2 (which is 0.5 when converted to a decimal), and 0.9, are less than 3. Therefore, all three numbers are less than or equal to 3.
Question: How many centimeters (cm) must one side of a rectangle with a perimeter of 32 centimeters (cm) be to be the rectangle the largest? Answer: To find the largest possible rectangle with a given perimeter, we need to determine the shape that maximizes the area. For a rectangle, the area is calculated by multiplyi...
Question: What is the sum of the largest and smallest eight-digit numbers that can be formed by using four numbers(4, 0, 2, 6) twice? Answer: To form the largest eight-digit number using the digits 4, 0, 2, 6 twice, we should place the largest digits at the beginning of the number. However, we cannot start the number w...
Question: The distance from Ga-eul's house to the taekwondo gym is 150 meters (m) farther than 3 kilometers (km), and the distance to the piano academy is 3095 meters (m). Which one is farther away from Ga-eul's house between taekwondo gym and piano academy? Answer: First, let's convert the distance to the taekwondo gy...
Question: Find the number of divisors of 90. Answer: To find the number of divisors of 90, we first need to express 90 as a product of its prime factors. 90 = 2 x 45 = 2 x 3 x 15 = 2 x 3 x 3 x 5 = 2^1 x 3^2 x 5^1 Now that we have the prime factorization of 90, we can find the number of divisors by using the ...
Question: There are numbers 0.8, 1/2, and 0.9. Find the sum of all numbers greater than 0.3. Answer: To find the sum of all numbers greater than 0.3, we first need to identify which numbers are greater than 0.3 from the given list: 0.8, 1/2 (which is 0.5 when converted to a decimal), and 0.9. All three numbers are gre...
Question: The largest equilateral triangle was created by using a 78 centimeters (cm) long string. How many centimeters (cm) is one side of this equilateral triangle? Answer: An equilateral triangle has all three sides of equal length. If a 78 cm long string was used to create the largest equilateral triangle, then the...
Question: We created a three-digit natural number among the number cards 1 to 9 and overlaps were allowed. Find how many numbers there are whose sum of each digit is 7. Answer: To find the number of three-digit numbers whose sum of each digit is 7, we need to find all combinations of three numbers from 1 to 9 that add ...
Question: A cube has an edge that is 12 centimeters (cm) long. I have glued 54 pieces of square paper on this cube without overlapping, and there is no empty space. Find the length of one side of this square paper. Answer: To find the length of one side of the square paper, we first need to determine the total surface ...
Question: What is the average of the following numbers? Natural numbers from 12 to 53. Answer: To find the average of natural numbers from 12 to 53, we can use the formula for the average of a sequence of consecutive numbers: Average = (First number + Last number) / 2 In this case, the first number is 12 and the last...
Question: Find the value greater than 34 and less than 18+18 among 34, 35, 36, and 37. Answer: First, calculate the value of 18 + 18: 18 + 18 = 36 Now, we are looking for a value that is greater than 34 and less than 36. Among the options provided (34, 35, 36, and 37), the number that satisfies this condition is: 35...
Question: If A is the number of vertices and B is the number of edges in a triangular prism, what is the value of A+B? Answer: A triangular prism has 6 vertices (corners) and 9 edges. Therefore, if A is the number of vertices and B is the number of edges, then: A = 6 B = 9 So, A + B = 6 + 9 = 15.