Question

find the greatest number of 4 digit which is a perfect square also find the square root of this number ​

Answer 1

solutions:-

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.

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