Is 400 a perfect square?
A perfect square on taking a square root gives a whole number. When you take the square root of 400, you get 20 which is a whole number. Hence, 400 is a perfect square.
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A perfect square on taking a square root gives a whole number. When you take the square root of 400, you get 20 which is a whole number. Hence, 400 is a perfect square.
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