If d >0 and (1-c/d) is greater than or equal to zero but

Oldest

Best Reply

Author

Message

TAGS:

Manager

Joined: 09 Feb 2003

Posts: 85

Location: Canada

Followers: 1

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

If d >0 and (1-c/d) is greater than or equal to zero but [#permalink]

28 Nov 2003, 11:17

00:00

Question Stats:

0% (00:00) correct

0% (00:00) wrong

based on 0 sessions

If d >0 and (1-c/d) is greater than or equal to zero but less than 1, which of the following must be true
I) c>0
II) c/d<1
III) c^2 +d^2>1( just to be clear, ^ is the exponent)
A) I only
B) II only
C) I and II
D) II and III
E) I , II and III
I chose A, but the official answer is different :wall

Intern

Joined: 24 Nov 2003

Posts: 30

Location: Champaign

Followers: 0

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

[#permalink]

28 Nov 2003, 18:39

I agree with A

c/d<1 - it can be 1 if c=d, if c/d =1 then 0 <= will fail, so II cannot be.

c^2 + d^2 > 1 is false, because
say c=.25 & d=0.5, c/d= .5 and is true for the inequality.

Director

Joined: 14 Oct 2003

Posts: 601

Location: On Vacation at My Crawford, Texas Ranch

Followers: 1

Kudos [?]: 2 [0], given: 0

[#permalink]

28 Nov 2003, 22:26

"I agree with A c/d<1 - it can be 1 if c=d, if c/d =1 then 0 <= will fail, so II cannot be.

c^2 + d^2 > 1 is false, because
say c=.25 & d=0.5, c/d= .5 and is true for the inequality."

I agree then, with your answer!

Last edited by Titleist on 28 Nov 2003, 22:42, edited 1 time in total.

Intern

Joined: 24 Nov 2003

Posts: 30

Location: Champaign

Followers: 0

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

[#permalink]

28 Nov 2003, 22:39

(1-c/d) is greater than or equal to zero

The only way 1 - c/d can be equal to 0 is if c=d, hence II is not a possibility.

GMAT Instructor

Joined: 07 Jul 2003

Posts: 773

Location: New York NY 10024

Schools: Haas, MFE; Anderson, MBA; USC, MSEE

Followers: 5

Kudos [?]: 9 [0], given: 0

[#permalink]

28 Nov 2003, 22:41

Titleist wrote:

"I agree with A c/d<1 - it can be 1 if c=d, if c/d =1 then 0 <= will fail, so II cannot be.

c^2 + d^2 > 1 is false, because
say c=.25 & d=0.5, c/d= .5 and is true for the inequality."

Read the statement carefully. I don't think that you can assume that C can equal D given the stated rule that 0<(1-c/d)<0. This implies that C must be another value besides D. In addition, c must also be < d. Also implicit in the statement given above, D is a positive number therefore C must be a positive number less than D - which makes c/d a fraction - a fraction is less than 1. Therefore, II must be true.

I don't think III MUST BE TRUE. C and D do not have to be integers - just greater than 0. If C = 1/3 and D= 1/2 then c/d = 2/3. And C^2 = 1/9 and D^2 = 1/4 combine the two fractions and of course the sum is less than 1.

read carefully. The stimulus states that 1 - c/d is greater then OR EQUAL to zero.
_________________

Best,

AkamaiBrah
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993

Director

Joined: 14 Oct 2003

Posts: 601

Location: On Vacation at My Crawford, Texas Ranch

Followers: 1

Kudos [?]: 2 [0], given: 0

[#permalink]

28 Nov 2003, 22:43

Yes, I had some cider before i turned on the computer - I will never do so again! :oops:

[#permalink] 28 Nov 2003, 22:43

		Similar topics	Author	Replies	Last post
Similar Topics:		Symbol denotes the least integer greater than or equal to d,	vshaunak@gmail.com	3	12 Jun 2007, 02:44
		If ab > cd and a, b, c and d are all greater than zero,	ArvGMAT	1	25 Jun 2007, 19:22
		If y is greater than equal to zero, what is the value of x:	Accountant	3	28 Mar 2009, 09:30
		PS_Greater than Zero	mbaMission	2	14 Jun 2009, 09:10
	2	If x is not equal to zero is xy > 0 ?	harikris	5	24 Sep 2012, 23:06

If d >0 and (1-c/d) is greater than or equal to zero but

Main navigation

GMAT Resources

Partners

MBA Resources

GMAT ® is a registered trademark of the Graduate Management Admission Council ® (GMAC ®). GMAT Club's website has not been reviewed or endorsed by GMAC.

GMAT Courses

Admissions Consulting

If d >0 and (1-c/d) is greater than or equal to zero but

If d >0 and (1-c/d) is greater than or equal to zero but

Main navigation

GMAT Resources

Partners

MBA Resources