For some reason, this question isn't clicking for me. It must be super easy, but I'm just not seeing my error.
Is x^4 + y^4 > z^4?
(1) x^2 + y^2 > z^2
(2) x + y > z
I understand that (2) is insufficient because x and y could be negative numbers, but why isn't (1) sufficient?
PS question on GMAT PREP Practice Test 2
This topic has expert replies
-
- Newbie | Next Rank: 10 Posts
- Posts: 1
- Joined: Thu Mar 06, 2008 9:41 pm
- Thanked: 1 times
-
- Master | Next Rank: 500 Posts
- Posts: 132
- Joined: Sun Apr 27, 2008 10:31 am
- Location: Portugal
- Thanked: 7 times
This Q is anything but easy and It was several times discussed here. Last time with insights from Ian.davisasialene wrote:For some reason, this question isn't clicking for me. It must be super easy, but I'm just not seeing my error.
Is x^4 + y^4 > z^4?
(1) x^2 + y^2 > z^2
(2) x + y > z
I understand that (2) is insufficient because x and y could be negative numbers, but why isn't (1) sufficient?
Here is the link https://www.beatthegmat.com/data-suffici ... 12814.html
Hope it helps.