Question

Which number is a common factor of 36, 48, and 66?
(Points : 1)
12
10
8
6

Answer 1

Any ideas?

Answer 2

Hint: How do you find the factors of a number?

Answer 3

Look for the number that divides into all three evenly.

Answer 4

does 12 go into all three numbers? 10? 8? 6? which of the choices go into the three numbers?

Answer 5

you can also do this by writing them in prime factor from and looking for common factors

36 = 2 * 2 * 3 * 3
48 = 2 * 2 * 2* 2 * 3
66 = 2*3* 11

notice that is one triplicate of 2 and one triplicate of 3

so GCF = 2*3 = 6