The ISODD function in Excel is used to check if a given number is odd or not. It returns TRUE if the number is odd and FALSE if it’s even. This function is simple to use and can be helpful when you need to perform calculations based on the parity of numbers.

## Syntax

**=ISODD(number)**

## Arguments

number | The number you want to check for oddness. |

## How to Use

The ISODD function is straightforward to use. You only need to provide a single argument, which is the number you want to check. Here are some examples of how to use the ISODD function:

Suppose you have a number in cell A1, and you want to check if it’s odd:

1 |
=ISODD(A1) |

If A1 contains the number 7, the formula will return TRUE, indicating that 7 is an odd number.

Here’s another example. Let’s say you want to check if the number 10 is odd:

1 |
=ISODD(10) |

In this case, the formula will return FALSE because 10 is an even number.

It’s important to note that the ISODD function is quite simple and useful when you need to quickly determine whether a number is odd or even within your Excel spreadsheet.

If you’re unsure about what “odd” means, an odd number is any integer that cannot be evenly divided by 2, leaving a remainder of 1. Even numbers, on the other hand, leave no remainder when divided by 2.