Question

Write 81 in the from of sum of 9 odd number

Answer 1

1 + 3+ 5+ 7+ 9+11+13+15+19= 81 . to find 81 as nine odd number we have write first 9 odd numbers and then we have to add them

1+3+5+7+9+11+13+15+17 = 81 , 81 square root = 9 .


the square root of 81 is 9

therefore we have to add the frst 9 odd no.