Question

if 25 = 5 into 5 16 = 4 into 4 then 81 =what? How we will find?

Answer 1

81 = 9

5 x 5 = 25

4 x 4 = 16

And, 9 x 9 = 81

so 81 = 9.

Answer 2

given 25 = 5*5
=> 25 = 5²
=> √25 = 5
||ly √4 = 4
and √81 = 9
or 81 = 9*9