Question

Find the greatest number of four digits that is a perfect square.​

Answer 1

100 x 100 gives 10000 a five number which is a perfect square.

So 99 x 99 =9801 is the greatest 4 digit perfect square.

If we take complex numbers also, then 32i x 32i = -1024 is the greatest negative 4 digit perfect square.H

Hope helps

Answer 2

Answer:

9801 is a perfect square of four digits.