What are the common factors?

Question

What are the common factors of 18 and 30?

Answer 1

Hi Alex ,

You have to know first what are factors ....Factors are the numbers we multiply and get another no.

so when we get factors of two or more no.s then we see some no. are common or same , those are the common factors between those two no. s..

Here in the above problem, two no. s are 18 and 30 .

you have to find out the common factors of those two..

Factors of 18= 1, 2, 3, 6, 9, 18

Factors of 30= 1, 2, 3, 5, 6, 10, 30..

so we see which are the common or same no. s in both numbers .....common factors are 1,2,3,6 Answer

Answer 2

What are the factors of 18?

1, 2, 3, 6, 9, 18

What are the factors of 30?

1, 2, 3, 5, 6, 10, 15, 30

Which factors appear in both lists?

Answer 3

Hi Alex,

The common factors of 18 and 30 are:

1, 2, 3, 6.

Each of these four numbers can be multiplied evenly into 18 and 30.