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

 It is currently 25 May 2017, 06:11

### 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

# If x and y are positive, which of the following must be

Author Message
Senior Manager
Joined: 17 Oct 2006
Posts: 434
Followers: 1

Kudos [?]: 28 [0], given: 0

If x and y are positive, which of the following must be [#permalink]

### Show Tags

03 Dec 2006, 06:08
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

If x and y are positive, which of the following must be greater than 1/sqrt(x+y)

I) sqrt(x+y)/2x
II) (sqrt(x)+sqrt(y))/(x+y)
III) (sqrt(x)-sqrt(y))/(x+y)

A) None
B) I
C) II
D) I and III
E) II and III
VP
Joined: 21 Aug 2006
Posts: 1019
Followers: 1

Kudos [?]: 31 [0], given: 0

Re: PS - GMAT Prep [#permalink]

### Show Tags

03 Dec 2006, 07:00
arjsingh1976 wrote:
If x and y are positive, which of the following must be greater than 1/sqrt(x+y)

I) sqrt(x+y)/2x
II) (sqrt(x)+sqrt(y))/(x+y)
III) (sqrt(x)-sqrt(y))/(x+y)

A) None
B) I
C) II
D) I and III
E) II and III

Took x as 9, y as 16.

Only I and II remain correct.

Took x as 16, y as 9

Only II remains valid.

_________________

The path is long, but self-surrender makes it short;
the way is difficult, but perfect trust makes it easy.

Re: PS - GMAT Prep   [#permalink] 03 Dec 2006, 07:00
Display posts from previous: Sort by