The set of first five odd natural numbers is called what?

Question

The set of first five odd natural numbers is called what?

Answer 1

Positive, single-digit, odd numbers.

Answer 2

Most of them (3, 5 and 7) are prime numbers (only divisible by itself and one). 1 is not considered a prime number (I'm not sure why) and nine is NOT a prime number since it can be divided by 3.

1, 3, 5, 7 and 9 are the single digit numbers used to 'test' whether larger numbers are even or odd. If a multi-digit number ends in one of these, it's odd. If it ends in 0, 2, 4, 6, or 8 it is even.

The sum of these numbers equal the square of the central number (sum of 1, 3, 5, 7, and 9 equal 25 which is the square of 5). The square of any of these numbers is an odd number.

There are other properties I'm sure, but none come to mind.

Answer 3

do you wanna know what they're called or what they are? As far as I know there's no special name for the numbers 1, 3, 5, 7, 9