Which are add numbers?

Answer 1

Odd numbers are those that cannot be evenly split into two equal amounts of whole numbers.

For instance, 4 can be split into two equal amounts of 2; 6 can be split into 3. These are called "Even" numbers because they can be split into even (or equal) amounts.

An odd number like 1, or 3, or 5, or 7 and so on cannot be split into two equal amounts of whole numbers. They are called, "odd" numbers simply because they are not 'Even' numbers. They could have been called, "Uneven" numbers, but a shorter word seemed easier. Odd, isn't it.