Question

8. Find the sum of 9 odd natural numbers and write the number, whose square it is​

Answer 1

Answer:

THIS IS YOUR ANSWER

Step-by-step explanation:

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)

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