Question

Here are some of the numbers that were picked out of the bag at bingo evening:

20 32 95 16 18 31 24 17

36. Which of these numbers is a square number?
37-38. Which of these numbers are prime numbers?

Answer 1

16 is a square number. 4x4=16.
31 and 17 are prime numbers because only 1 and that number can be multiplied to create that number.