What do you call the numbers that cannot be arranged into 2/ row arrays

Wow, this is a rather popular question. See jiskha(.)com/display.cgi?id=1188941103

You asked this question before. I see no reason why any numbers, even complex numbers, cannot be arranged in a two-column array.

The numbers that cannot be arranged into 2/row arrays are called odd numbers. These numbers cannot be divided evenly into pairs, leaving one number alone without a partner. To identify odd numbers, you can follow these steps:

1. Start with a list of numbers.
2. Check each number in the list.
3. Divide each number by 2.
4. If the result of the division has a remainder of 1, then the number is odd.
5. If the result of the division is a whole number, then the number is even.

For example, let's take the numbers 1, 2, 3, 4, and 5:

1 divided by 2 equals 0 remainder 1. Hence, 1 is an odd number.
2 divided by 2 equals 1. Hence, 2 is an even number.
3 divided by 2 equals 1 remainder 1. Hence, 3 is an odd number.
4 divided by 2 equals 2. Hence, 4 is an even number.
5 divided by 2 equals 2 remainder 1. Hence, 5 is an odd number.

Therefore, in this case, the odd numbers are 1, 3, and 5, while the even numbers are 2 and 4.