A perfect square is a rational number equal to the square of a whole number.
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When the whole number is a perfect square, ie it is a whole number squared.
The square root of 15 is not a whole number.
The square of every positive or negative even whole number is a positive even whole number. The square of every positive or negative odd whole number is a positive odd whole number. There are an infinite number of each kind.
nope! take the square root of 5, 2.236067978... which is not a whole number! hope this helps!
No. The square root of 249 is not a whole number, therefore it is not a square number.