Numbers that are not divisible by any perfect square (other than 1). For example, 10, 14, and 15 are all square-free numbers, since they are not divisible by any perfect square other than 1.
Numbers that are not divisible by any perfect square (other than 1). For example, 10, 14, and 15 are all square-free numbers, since they are not divisible by any perfect square other than 1.