The multiples of 21 are obtained by multiplying integers with 21. In this section, we will learn about the multiples of 21. For more details about multiples, see our page “Multiples of a Number“.

Table of Contents

## What are Multiples of 21?

A number is called a multiple of 21 if it is completely divisible by 21 with the remainder zero.

For example, 21 divides 42 completely, so by the definition 42 is a multiple of 21. Similarly, 21, 42, 63, 84, 105, 210, 2100, etc. are all examples of multiples of 21 as they are completely divisible 21.

Remark: From the above definition, it is clear that any multiple of 21 can be written as 21n for some integer n. So the set of multiples of 21 is given by

{21n: n is an integer}

## First 10 Multiples of 21

The first 10 multiples of 21 are as follows:

21×1=21 | 21×2=42 |

21×3=63 | 21×4=84 |

21×5=105 | 21×6=126 |

21×7=147 | 21×8=168 |

21×9=189 | 21×10=210 |

So we have:

The first 10 multiples of 21 are 21, 42, 63, 84, 105, 126, 147, 168, 189, and 210. |

**Question:** What are the first ten multiples of 21?

**Video Solution:**

## First 20 Multiples of 21

The first 20 multiples of 21 are given below:

21×1=21 | 21×2=42 |

21×3=63 | 21×4=84 |

21×5=105 | 21×6=126 |

21×7=147 | 21×8=168 |

21×9=189 | 21×10=210 |

21×11=231 | 21×12=252 |

21×13=273 | 21×14=294 |

21×15=315 | 21×16=336 |

21×17=357 | 21×18=378 |

21×19=399 | 21×20=420 |

So we have:

The first 20 multiples of 21 are 21, 42, 63, 84, 105, 126, 147, 168, 189, 210, 231, 252, 273, 294, 315, 336, 357, 378, 399, and 420. |

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This article is written by Dr. T. Mandal, Ph.D in Mathematics. On Mathstoon.com you will find Maths from very basic level to advanced level. Thanks for visiting.