True or False?

Square numbers like 9, 16, 4, and 25 have odd square roots: 9- 1,3,9 16-1,2,4,8,16 4- 1,2,4, and 25- 1, 5, 25

Let n = 4. Ed Gray

To prove something is true in mathematics, every single values in the range must be true otherwise it is false.

Because the range is all whole numbers above $2$ , we can start with that number.

$2$ has factors $1$ and $2$ so it has two factors.

$3$ has factors $1$ and $3$ so it has two factors.

However, $4$ has factors $1$ , $2$ and $4$ so it has three factors.

Since the condition is all numbers within the range having even number of positive factors, $4$ does not satisty that, so False.

The numbers {0, 1, 2, 3, ...} etc. There is no fractional or decimal part. And no negatives. Reference : http://www.mathsisfun.com/definitions/whole-number.html

Square numbers have twin factor other than itself and 1. So, the answer is FALSE