Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 23 May 2017, 00:30

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Is (x^4+y^4)>z^4? 1) x^2 + y^2 > z^2 2) x+y>z

Author Message
Intern
Joined: 11 Sep 2006
Posts: 44
Followers: 0

Kudos [?]: 3 [0], given: 0

Is (x^4+y^4)>z^4? 1) x^2 + y^2 > z^2 2) x+y>z [#permalink]

### Show Tags

04 Nov 2006, 00:19
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Is (x^4+y^4)>z^4?

1) x^2 + y^2 > z^2
2) x+y>z
Intern
Joined: 17 Sep 2006
Posts: 46
Followers: 0

Kudos [?]: 0 [0], given: 0

### Show Tags

04 Nov 2006, 00:57
Tricky question,

but I would go for E.

S2 clearly insufficient as z coult be negative.

S1 is difficult, but it's insufficient too. For example, what if it's 0.5+0.5>0.9. If we square each of them (to get ^4), we get 0.25+0.25>0.81, which is false. But if we would have 25+9>4, the statement would be true.

We don't do anything with S1+S2, E it is.
04 Nov 2006, 00:57
Display posts from previous: Sort by