# Modulus

In this lesson, we will learn about the modulo operation and how to implement it using recursion.

## We'll cover the following

## What is the modulo operation?

The modulo operation (abbreviated as **mod**) returns the **remainder** when a number is divided by another number. The symbol for `mod`

is `%`

.

The number being divided is called the

dividend. The number that divides the dividend is called thedivisor.

The illustration below represents the concept of remainders using basic division example:

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