What Is the Average of All Prime Numbers Less Than 20?

Learn how to find the average of prime numbers under 20 with step-by-step calculation and examples for quick understanding.

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The average of all prime numbers less than 20 is calculated by first identifying the primes (2, 3, 5, 7, 11, 13, 17, and 19) and then adding them together (2+3+5+7+11+13+17+19 = 77). This total (77) divided by the number of primes (8) gives 9.625. So, the average of all prime numbers less than 20 is 9.625.

FAQs & Answers

  1. How do you find the average of prime numbers? To find the average of prime numbers, add all the prime numbers together and then divide by the total number of primes.
  2. What are the prime numbers less than 20? The prime numbers less than 20 are 2, 3, 5, 7, 11, 13, 17, and 19.
  3. Why is 1 not considered a prime number? 1 is not considered a prime number because prime numbers are defined as numbers greater than 1 that have only two divisors: 1 and themselves.

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