OAs 1 -> C 2 -> E : DS Archive
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 18 Jan 2017, 15:44

### 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

# OAs 1 -> C 2 -> E

Author Message
Senior Manager
Joined: 29 Jan 2007
Posts: 450
Location: Earth
Followers: 2

Kudos [?]: 61 [0], given: 0

OAs 1 -> C 2 -> E [#permalink]

### Show Tags

28 Apr 2008, 08:59
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.

OAs
1 -> C
2 -> E
Attachments

File comment: Question 2

GMP2_2_DS2.jpg [ 7.12 KiB | Viewed 754 times ]

File comment: Question 1

GMP2_2_DS1.jpg [ 15.74 KiB | Viewed 751 times ]

Senior Manager
Joined: 19 Apr 2008
Posts: 320
Followers: 3

Kudos [?]: 78 [0], given: 0

Re: GMATPrep 2 - DS [#permalink]

### Show Tags

28 Apr 2008, 10:40
kyatin wrote:
OAs
1 -> C
2 -> E

a)

1 ) p-q > n

you can put it as p >q+n ; insuff no information about n , n could be +ve or -ve

2) q>p ; doesn't give us information about n at all ; insuff

combining the both if p>q+n and q>p ; n has to be -ve and given that p and q are both positive we know n is < p and q both .

-------------------------------------------------------

b)

1) doesn't give information about y intercept -insuff
2) doesn't give information about y intercept again so insuff . it just tells us slope is downward passing from II quadrant to iV quadrant or passing from IInd quadrant to IIIrd quadrant .

I think what will make this sufficient is either information about y intercept or any x,y coordinate of line k , any thoughts anyone?
Senior Manager
Joined: 29 Jan 2007
Posts: 450
Location: Earth
Followers: 2

Kudos [?]: 61 [0], given: 0

Re: GMATPrep 2 - DS [#permalink]

### Show Tags

28 Apr 2008, 11:00
rpmodi wrote:
kyatin wrote:
OAs
1 -> C
2 -> E

a)

1 ) p-q > n

you can put it as p >q+n ; insuff no information about n , n could be +ve or -ve

2) q>p ; doesn't give us information about n at all ; insuff

combining the both if p>q+n and q>p ; n has to be -ve and given that p and q are both positive we know n is < p and q both .

-------------------------------------------------------

b)

1) doesn't give information about y intercept -insuff
2) doesn't give information about y intercept again so insuff . it just tells us slope is downward passing from II quadrant to iV quadrant or passing from IInd quadrant to IIIrd quadrant .

I think what will make this sufficient is either information about y intercept or any x,y coordinate of line k , any thoughts anyone?

On Circle-line question, I though C. But I see my mistake. X intercept "greater" than one is pretty much useless info. Cant be used to determine a unique line.
I thought if slope is given which is -1/10 then X intercept being more than 1 means Y intercept has to be greater than 10 ( is that good assumption?). I was not sure if such line having X intercept greater than 1 and Y intercept greater than 10, would intersect circle of radius 1. Any thoughts on that?
SVP
Joined: 24 Aug 2006
Posts: 2132
Followers: 3

Kudos [?]: 140 [0], given: 0

Re: GMATPrep 2 - DS [#permalink]

### Show Tags

28 Apr 2008, 11:00
kyatin,

Please separate and post one question at a time. In conjunction with the other question, I am confused out of my mind

Senior Manager
Joined: 19 Apr 2008
Posts: 320
Followers: 3

Kudos [?]: 78 [0], given: 0

Re: GMATPrep 2 - DS [#permalink]

### Show Tags

28 Apr 2008, 12:07
Quote:
On Circle-line question, I though C. But I see my mistake. X intercept "greater" than one is pretty much useless info. Cant be used to determine a unique line.
I thought if slope is given which is -1/10 then X intercept being more than 1 means Y intercept has to be greater than 10 ( is that good assumption?). I was not sure if such line having X intercept greater than 1 and Y intercept greater than 10, would intersect circle of radius 1. Any thoughts on that?

x intercept being more than one and slope = -1/10 will not give us enuf information about y intecept

take this example

let's assume x intercept = 2
y=mx+b
0=(-1/10)*2+b ; b = 0.2 , so yes line will intersect circle

let's assume x intercept =20
0=(-1/10)*20+b b=2 ; line will not intersect circle .

Hope that helps .....
Senior Manager
Joined: 29 Jan 2007
Posts: 450
Location: Earth
Followers: 2

Kudos [?]: 61 [0], given: 0

Re: GMATPrep 2 - DS [#permalink]

### Show Tags

28 Apr 2008, 12:37
rpmodi wrote:
Quote:
On Circle-line question, I though C. But I see my mistake. X intercept "greater" than one is pretty much useless info. Cant be used to determine a unique line.
I thought if slope is given which is -1/10 then X intercept being more than 1 means Y intercept has to be greater than 10 ( is that good assumption?). I was not sure if such line having X intercept greater than 1 and Y intercept greater than 10, would intersect circle of radius 1. Any thoughts on that?

x intercept being more than one and slope = -1/10 will not give us enuf information about y intecept

take this example

let's assume x intercept = 2
y=mx+b
0=(-1/10)*2+b ; b = 0.2 , so yes line will intersect circle

let's assume x intercept =20
0=(-1/10)*20+b b=2 ; line will not intersect circle .

Hope that helps .....

I saw my mistake , another one.

m = $$\frac{\Delta y}{\Delta x}$$

and NOT $$\frac{\Delta x}{\Delta y}$$

That was great....dont know why I just dint plug in the numbers.
Re: GMATPrep 2 - DS   [#permalink] 28 Apr 2008, 12:37
Display posts from previous: Sort by