Question

what is the greatest number of 4 digits, which is perfect square is
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Answer 1

Answer:

9801

Step-by-step explanation:

99² = 9801

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Answer 2

Answer:

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.