Is the zero is the smallest number?

Answer 1

Yes, zero is the smallest whole number. One is the smallest counting or natural number.

Another opinion

0 (called "zero" or "nil") means "nothing exists" so 0 cannot itself be a real number.

So the smallest whole number is 1. (Also known as "one" or "unity".)

Answer 2

No because as for example -1 is smaller than 0