Question

The average of first 10 prime number is:
1. 13.1
2. 12.7
3. 12.9
4. 15.1

Answer 1

Correct Answer - Option 3 : 12.9

Given:

First 10 prime numbers = 2, 3, 5, 7, 11, 13, 17, 19, 23, 29

Formula used:

Average = (sum of total observations)/ (numbers of observations)

Calculation:

Sum of first 10 prime numbers = 2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29

⇒ Sum of first 10 prime numbers = 129

The average of first 10 prime number = (Sum of first 10 prime numbers)/10

⇒ The average of first 10 prime number = 129/10

⇒ 12.9

∴  The average of first 10 prime number is 12.9.