Here we will answer the question: "Is 1 a square number?" You could also ask "Is 1 a perfect square?" Square number and perfect square mean the same thing.

Anyway, for 1 to be a square number, 1 must be the product of an integer multiplied by itself. In other words, the square root of 1 must equal a whole number (integer).

The square root of 1 is 1 which is an integer. Thus, 1 is a square number.

The answer to the question: "Is 1 a square number?" is Yes.

The answer to the question: "Is 1 a perfect square?" is also Yes.

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