# Multiples of 21

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“.

#### 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 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.