Question

What is the greatest common factor of 30, 45, and 50?

Answer 1

`5`

Explanation:

Factors of `30` are `{1,2,3,5,6,10,15,30}`

Factors of `45` are `{1,3,5,9,15,45}`

Factor of `50` are `{1,2,5,10,25,50}`

Hence common factors are `{1,5}` and greatest common factor is `5`.