What will be the average of all the prime numbers between 9 and 22?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 15.
We know that,
Average = Sum of observations/Number of observations
Prime numbers between 9 and 22 = 11, 13, 17, 19
Sum of observations = 11 + 13 + 17 + 19 = 60
Required average = 60/4 = 15