Find the average of the prime numbers lying between 50 and 76.

Correct option is D

Concept Used:

The prime numbers lying between 51 and 76 are 53 , 59, 61, 67, 71 , 73

Average = $$\frac{\text{Sum of Observations}}{\text{Number of Observations}}$$​​

Solution:

Average =$$\frac{53 + 59 + 61 + 67 + 71 + 73}{ 6} = 64$$ 

Information Booster:

The prime numbers list up to 100 is as follows:2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.

Total Prime Numbers between 1 to 100= 25 prime numbers