Question

how many of the first ten positive whole numbers can be expressed as the sum of two different prime numbers?

Answer 1

1 = Not Possible
2 = Not Possible
3 = Not Possible
4 = 2 + 2
5 = 2 + 3
6 = 3 + 3
7 = 2 + 5
8 = 3 + 5
9 = 2 + 7
10 = 3 + 7
Taking into account that there must be two "Different" prime numbers, that leaves 5, 7, 8, 9, and 10. So 5 of the first 10 whole numbers.