Question

How to easily find square of any number from 1 to 100 very easily.For example some people multiply 123456789x98765.. very easily and without doing any calculation.If someone has any trick,do share it as your answer.And if you have the trick for finding sqaure of any number from 1 to 100,do share the answer of this also.If you have answer of anyone of these two questions,then give the answer to me!

Answer 1

square root..... method