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

Redeem

x is a nonzero number. Is xy < 0?

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
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 » Mon Jun 10, 2019 5:47 am

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

Each Statement is clearly insufficient alone, since if y is nonzero, we'll get different answers to the question by making x positive or negative.

Using both statements, y must be zero, so xy = 0, and the answer to the question "is xy < 0?" is 'no', 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