Question

Find the average of first 10 prime numbers.

• A. 10
• B. 10.1
• C. 12.2
• D. 12.9

Answer 1

The Correct Option is D

The task is to find the average of the first 10 prime numbers. To solve this, we will first list the first 10 prime numbers, calculate their sum, and then find the average.

1. Prime numbers are numbers greater than 1, with no divisors other than 1 and themselves. Starting from the smallest prime number, we list them:

• 2
• 3
• 5
• 7
• 11
• 13
• 17
• 19
• 23
• 29

2. Now, sum these prime numbers:

Sum = 2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29 = 129

3. The average of these numbers is calculated by dividing the sum by the total number of numbers, which is 10 in this case:

Average = Sum/Number of Primes = 129/10 = 12.9

Therefore, the average of the first 10 prime numbers is 12.9.