Multiples of 2, 5 and 10

Multiples of 2

Below is the first 10 multiples of 2:

2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ...

We can see that, all multiples of 2 are even number. Therefore, we can conclude that
All even numbers are the multiples of 2

Multiples of 5

Let's list down the first 10 multiples of 5:

5, 10, 15, 20, 25, 30, 35, 40, 45, 50, .....

We can see that, all multiples of 5 end with either 5 or 0, or the first digit (the ones digit) is either 0 or 5. Therefore, we conclude that
All numbers end with 0 or 5, are the multiples of 5

Multiples of 5

Lastly, let's see the multiples of 10:

10, 20, 30, 40, 50, 60, 70, 80, 90, 100 ......

We can see that, all multiples of 5 end with 0, which means the first digit is always 0. Therefore, we conclude that
All numbers end with 0 are the multiples of 10

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