Question

HELP HELP!!

Which of these numbers is prime EXPLANE HOW/WHY THOSE ARE PRIME?
30 31 32 33

Answer 1

31, because it can't be even or compatible.

Answer 2

30 is divisible by 2 so it is composite

32 is divisible by 2 so it is composite

33 is divisible by 3 so it is composite

31 is prime because it can only be divided by itself and 1