What is the average of all prime numbers between 10 and 20?

Topic: Arithmetic &amp; Percentages
Subtopic: Averages &amp; Prime Numbers

A14.25

B15.0

C15.25

D16.0

Explanation

Prime numbers between 10 and 20 are 11, 13, 17, and 19. Average = (11 + 13 + 17 + 19) / 4 = 61 / 4 = 15.25.

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