Find the greatest common divisor of the numbers. 16 and 18

2 is the greatest common divisor.

Explanation:

Though they both have different multiplies 2 is the only number that shows up in both of those

18- 1, 2, 3, 6, 9, 18 are the multiple

16- 1, 2, 4, 8, 16, x, 2x, 4x, 8x, 16x are the multiple

Of those multiple 2 is the only number they both have in common

Therefore, 2 is the greatest common divisor