Question

The average of first five prime numbers is
1. 4.6
2. 5.4
3. 5.6 
4. None of the above

Answer 1

Correct Answer - Option 3 : 5.6 

Concept:

Average = Sum of total observations/ Total observation

Calculation:

First five prime numbers = (2, 3, 5, 7, 11)

Sum of the first five prime numbers = 2 + 3 + 5 + 7 + 11

⇒ 28

Average = 28/5 

⇒ 5.6

∴ The average of the first five prime numbers is 5.6