Question

How to find out the non square numbers between 81 and 121?

Answer 1

81 is a perfect square after that 100 is a perfect square after that 121 is perfect square

so,

121-81-1-1=40

first -1 for , already inbetween 81 and 121 there is a perfect so we have to subtract it

second -1 is for, they asked between so we have to wear a -1 in the problem

I hope it helps you