Question

find the least number of4digit which is a perfect square

Answer 1

1111

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Answer 2

Greatest number of four digits = 1000.



(32)2 is more than 1000 by 24.

So, the least number to be added to 1000 is 24.

1000 + 24 = 1024

Therefore, the smallest four digit number which is a perfect square is 1024.