391
37 + 3
17, 23.
3 + 37 = 4011 + 29 = 4017 + 23 = 40
The only way for three prime numbers to have a sum of 42 is if one of the prime numbers is 2, as 2 is the only even prime number. The other two prime numbers must add up to 40, which can only be achieved by 3 and 37. Therefore, the three prime numbers that have a sum of 42 are 2, 3, and 37.
Oh, isn't that a happy little question! Let's see, the prime numbers between 30 and 40 are 31, 37. So, if we add them together, we get 68. Just remember, there are no mistakes, only happy accidents in math and painting!
120
23 times 5
68
The prime numbers between 40 and 50 are 41, 43, 47. So their sum is 131.
2, 7 and 31 add up to 40.
The sum is: 23+29+31+37 = 120