# Find the Average of First Ten Prime Numbers:

**Answer: (1) 12.9**

**Explanation:-**

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

The sum of the 10 prime numbers = 2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29

= 129

**Formula-**

**Average = the sum of the observation / the number of the observation**

Then, the average of first ten prime numbers = 129/10

= 12.9

Hence, the answer is (1) 12.9.