Question

sum of 2 odd no. to get 81​

Answer 1

Step-by-step explanation:

Sum of two odd number always even number . so express 81 as the sum of 2 odd number not possible . therefore we have to add the frst 9 odd nos.

Answer 2

Answer:

Sum of first nine consecutive odd numbers = 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 = 81.

explanation-

Sum of two odd number always even number .

odd+odd= even

​​​​​​81 is odd number  

so express 81 as the sum of 2 odd number not possible .

I think this is the actual question

express 81 as the sum of 9 odd numbers

Ans: the square root of 81 is 9

therefore we have to add the frst 9 odd nos.

i.e. 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 = 81