Question

Find the longest number of two digit when is a perfect square​

Answer 1

Answer:

81

Step-by-step explanation:

the two digit no start from 10 to 99

but the no from 90 to 99 are not perfect square

so the right answer is 81

hope it helps

Answer 2

Answer:

81

Step-by-step explanation:

9*9=81

so the answer is 81