BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

help !!!!!!!! GCI !!!!

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 71
Joined: Sun May 18, 2008 11:04 pm
Thanked: 1 times

help !!!!!!!! GCI !!!!

by charmaine » Mon Sep 22, 2008 10:55 pm
If x and y are positive integers, what is the value of xy ?

(1) The greatest common factor of x and y is 10.

(2) The least common multiple of x and y is 180.


ans. C

thank u
Top
Source: — Data Sufficiency |

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 2623
Joined: Mon Jun 02, 2008 3:17 am
Location: Montreal
Thanked: 1090 times
Followed by:355 members
GMAT Score:780

by Ian Stewart » Tue Sep 23, 2008 2:40 am
If you multiply the LCM and the GCD of two numbers, you always get the product of the two numbers. Or written as an equation,

LCM(x,y)*GCD(x,y) = x*y

So the answer is C.
For online GMAT math tutoring, or to buy my higher-level Quant books and problem sets, contact me at ianstewartgmat at gmail.com

ianstewartgmat.com
Top
Post new topic Post Reply
• Page 1 of 1