Question

The sum of 3 numbers is 18 if every number is a prime number what areally the 3 numbers

Answer 1

A prime number is a natural number greater than 1 that has no positive divisors other than 1 itself. 3,11, and 5 are all prime numbers. if you add 3+5+11 you'll get the sum of 18. So 3,5,and 11 are the answers 

Answer 2

well, there aren't that many prime numbers below 18, so we can list them:

2
3
4
7
11
13
17


I wonder if there is only one solution... i didn't check for this. but at least one solution is the following one:

13+2+3=18
alternative, if we can repeat the numbers:
4+7+7