Question

If there are 143 math books to be arranged in equal number in all stacks,then find the number of books in each stack and also the number of stacks

Answer 1

This problem has two possible solutions. The number 143 is divisible by 11 and 13.

Therefore, you can divide the 143 books into 11 stacks, where each stack has 13 books. Or, you can divide the books into 13 stacks where each stack has 11 books.

In these two solutions, you can always insure the number of books is equal in all stacks.