What is the average of the set of prime numbers falling between 12 and 42?

A28.25

B22.25

C25.25

D26.25 ✓ Correct

Correct answer: (D) 26.25

Explanation

The average of these primes is 26.25.

primes between 12 and 42: 13, 17, 19, 23, 29, 31, 37, 41.

their count = 8.

their sum = 210.

average = 210 / 8 = 26.25.

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