Question

is 42 or 48 a square number

Answer 1

Answer:

42 a perfect square number? 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 42 is about 6.481. Thus, the square root of 42 is not an integer, and therefore 42 is not a square number.