[1] 15 × 13 = |
[2] There are 12 balls of 4 colors with 3 balls per color in a bag. At least how many balls need to be picked to make sure there are two balls of the same color? Please give your answer: |
[3] What are the factors of 54? Type all the factors separated by ','. Please give your answer: |
[4] A 4-digit whole number is added to a 2-digit whole number. There is a largest possible sum and a smallest possible sum. What is the difference between those two sums? Please give your answer: |
[5] The last Saturday of a month was on the 28th day of the month. What day of the week was the first day of the month? Please select your answer: |
[6] Which of the following whole numbers is divisible by 5040? Please select your answer: |
[7] A box of pencils can be divided equally among 4, 5, 6, or 7 children with no pencils left. What is the smallest number of pencils that the box could have? Please give your answer: |
[8] 85 × 85 = ? |
[9] Make a 5 using the following 5 numbers: 5, 6, 7, 8 and 5. You can use +,-,*,/, and ( ) as many times as you wish, but you need to use all 5 numbers and each number only once. Please give your answer: |
[10] The product of two whole numbers is 1000. If neither of the numbers contains the digit zero, what is the larger number? Please give your answer: |
