23+29 = 52
148
It is 75.
17 and 3 are two prime numbers whose sum is 20. Their product is 51.
They are: 23+29 = 52
The sum is: 23+29+31+37 = 120
23+29 = 52
-20
The prime numbers between 4 and 20 are 5, 7, 11, 13, 17 and 19. Their sum is 72.
The answer is 52.
148
It is 75.
3 + 17 = 20
They are: 2+7+11 = 20
17 and 3 are two prime numbers whose sum is 20. Their product is 51.
They are: 23+29 = 52
3 and 17