How to find the largest four digit number that is a perfect square?
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Since the number has four digit.its square root always have 2 digit.
consider the greater 2 digit is 99
on squaring 99 we gate
99*99=9801
so greatest four digit number which is a perfect square is 9801
consider the greater 2 digit is 99
on squaring 99 we gate
99*99=9801
so greatest four digit number which is a perfect square is 9801
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