Question

why seven is not a perfect square​

Answer 1

Because it is a prime number

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Answer 2

Answer:

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 7 is about 2.646. Thus, the square root of 7 is not an integer, and therefore 7 is not a square number.