If d>0 and 0< 1-c/d <1, which of the following : Quant Question Archive [LOCKED]
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 24 Jan 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

If d>0 and 0< 1-c/d <1, which of the following

Author Message
Retired Moderator
Joined: 18 Jul 2008
Posts: 994
Followers: 10

Kudos [?]: 196 [0], given: 5

If d>0 and 0< 1-c/d <1, which of the following [#permalink]

Show Tags

22 Oct 2008, 20:14
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

If d>0 and 0< 1-c/d <1, which of the following condition must be true?

1) c>0
2) c/d<1
3) c^2+d^2>1

The OA is telling me something different that what I'm getting.
Manager
Joined: 09 Oct 2008
Posts: 93
Followers: 1

Kudos [?]: 20 [0], given: 0

Re: This one is easy right? [#permalink]

Show Tags

22 Oct 2008, 20:42
1 and 2 are correct

c:=0.3 and d =0.4 dn c^2 +d^2 <1
Intern
Joined: 03 Mar 2008
Posts: 47
Followers: 1

Kudos [?]: 8 [0], given: 0

Re: This one is easy right? [#permalink]

Show Tags

22 Oct 2008, 21:05
I and II are correct
What is the OA ?
SVP
Joined: 17 Jun 2008
Posts: 1569
Followers: 11

Kudos [?]: 250 [0], given: 0

Re: This one is easy right? [#permalink]

Show Tags

22 Oct 2008, 22:40
Agree with I and II.

0 < 1-c/d < 1
or, 0 > c/d-1 > -1
or, 1 > c/d > 0

and, since d > 0, hence, c > 0.
Also, 1 > c/d.

Now, take two examples,
c = 3, d = 4 and hence c^2 + d^2 > 1
But, if c = 1/3 and d = 1/2 then c^2 + d^2 < 1.
VP
Joined: 30 Jun 2008
Posts: 1043
Followers: 14

Kudos [?]: 570 [0], given: 1

Re: This one is easy right? [#permalink]

Show Tags

23 Oct 2008, 03:48
I agree with 1 and 2.

I assumed it is 1-(c/d) and not (1-c)/d
_________________

"You have to find it. No one else can find it for you." - Bjorn Borg

Retired Moderator
Joined: 18 Jul 2008
Posts: 994
Followers: 10

Kudos [?]: 196 [0], given: 5

Re: This one is easy right? [#permalink]

Show Tags

23 Oct 2008, 05:39
OA is 1) and 2)

I thought 3) was valid as well, but then didn't try decimals.

Thanks gang.
Re: This one is easy right?   [#permalink] 23 Oct 2008, 05:39
Display posts from previous: Sort by