Question

Express 196 as the sum of 9 odd natural number

Answer 1

Answer:

Given 81 can be written as 9

2

According to the property of perfect square, for any natural number n, we have sum of first n odd natural numbers =n

2

Expressing 81 as a sum of 9 odd numbers, we get

81=(9)

2

Here n=9

By applying the law 81=(1+3+5+7+9+11+13+15+17)