Baten80 wrote:

If x is divisible by 6 and 9, then x must be a multiple of:

I. 3

II. 18

III. 27

A. I only

B. I and II only

C. II and III only

D. I and III only

E. I, II, and III

x is a multiple of 6 so it has 2 and 3.

x is a multiple of 9, so it has two 3s.

So x has a 2 and two 3s at least.

x = 2 * 3 * 3 * k

This means x is a multiple of 3 and 18. But we cannot say anything about 27 since we do not know if x has three 3s.

Answer (B)

_________________

Karishma

Veritas Prep GMAT Instructor

Learn more about how Veritas Prep can help you achieve a great GMAT score by checking out their GMAT Prep Options >

GMAT self-study has never been more personalized or more fun. Try ORION Free!