What is the sum of all prime numbers from 60 to 80?
What is the sum of all prime numbers from 60 to 80?
Explanation
The prime numbers between 60 and 80 are:
61, 67, 71, 73, and 79
Let's add them up:
61 + 67 = 128
128 + 71 = 199
199 + 73 = 272
272 + 79 = 351
So, the correct answer is: 351