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

Redeem

GMAT prep inequality 3

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 3835
Joined: Fri Apr 02, 2010 10:00 pm
Location: Milpitas, CA
Thanked: 1854 times
Followed by:523 members
GMAT Score:770

by Anurag@Gurome » Wed Mar 14, 2012 5:42 am
jkelk wrote:Hi

Please help solve the attached.

Thanks,
J
Is x^4 + y^4 > z^4 ?

(1) x² + y² > z²
If x = 1, y = 1, z = 0, then x^4 + y^4 > z^4
If x = 5, y = 6, z = 7, then x^4 + y^4 < z^4
No definite answer; NOT sufficient.

(2) x + y > z
If x = 1, y = 1, z = 0, then x^4 + y^4 > z^4
If x = 5, y = 6, z = 7, then x^4 + y^4 < z^4
No definite answer; NOT sufficient.

Combining (1) and (2), we can take the same examples as in statements 1 and 2 above; NOT sufficient.

The correct answer is E.
Anurag Mairal, Ph.D., MBA
GMAT Expert, Admissions and Career Guidance
Gurome, Inc.
1-800-566-4043 (USA)

Join Our Facebook Groups
GMAT with Gurome
https://www.facebook.com/groups/272466352793633/
Admissions with Gurome
https://www.facebook.com/groups/461459690536574/
Career Advising with Gurome
https://www.facebook.com/groups/360435787349781/
Top
Post new topic Post Reply
• Page 1 of 1