What is the average of the first 10 prime numbers?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 12.9.
We know that,
Average = Sum of observations/Number of observations
Now,
Sum of first 10 prime numbers = 2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29 = 129
Required average = 129/10 = 12.9