Question

Find the greatest four digit number which is perfect square number?​

Answer 1

Step-by-step explanation:

9999 is largest 4 digit number, and 100^2 is 10000, or 1 greater than the largest 4 digit number. This means that the closest square root of the largest perfect square is most likely 99. So 99^2 (9801)is the largest perfect square of four digits.

Answer 2

Answer:

So the greatest four digit perfect square number is 9801.