ASVAB Practice Math Questions

Category - Math - Hard

The sum of first four prime numbers is
  1. 10
  2. 11
  3. 16
  4. 17
Explanation
Answer D: A prime number is a natural number larger than 1 which does not have divisors other than itself and one. The first four 2, 3, 5 and 7. The sum=17

Key takeaway: 0 and 1 are not prime numbers. 2,3,5,7,11,13,17,19,23,… are prime numbers. You can check none of these numbers can be divided by any number other then themselves or 1.
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