Question

Find the average of squares of first five natural numbers?

Answer 1

square of first five natural numbers=1,4,9,16,25
average=1+4+9+16+25/5
             =55/5
             =11

Answer 2

5 first natural numbers= 1,2,3,4,5
Their squares= 1,4,9,16,25
Sum=55
Average= sum/no. Of digits
= 55/5
=11