Probability

This topic has expert replies
Source: — Problem Solving |

User avatar
Legendary Member
Posts: 575
Joined: Tue Nov 04, 2008 2:58 am
Location: India
Thanked: 18 times
Followed by:4 members
GMAT Score:710

by rahulg83 » Sun Jun 21, 2009 3:48 am
Are u sure that question is complete?

all 8 points could be "above" the line x+2y=10, probability will be 1.
or 7 points above this line and one below it, answer would be 7/8..

User avatar
GMAT Instructor
Posts: 3225
Joined: Tue Jan 08, 2008 2:40 pm
Location: Toronto
Thanked: 1710 times
Followed by:614 members
GMAT Score:800

Re: Probability

by Stuart@KaplanGMAT » Sun Jun 21, 2009 9:34 am
ketkoag wrote:In a xy-plane, eight points are given. If a point is selected at random, what is the probability that x+2y>10?
Some free advice: start posting entire questions, including answer choices, or people will just ignore your posts.

The question as written is unanswerable.
Image

Stuart Kovinsky | Kaplan GMAT Faculty | Toronto

Kaplan Exclusive: The Official Test Day Experience | Ready to Take a Free Practice Test? | Kaplan/Beat the GMAT Member Discount
BTG100 for $100 off a full course

Legendary Member
Posts: 876
Joined: Thu Apr 10, 2008 8:14 am
Thanked: 13 times

by ketkoag » Mon Jun 22, 2009 3:02 am
i apologize for the inconvenience, i posted it to check whether i am missing something coz i thought the problem is incomplete too, but then i thought there might be some concept that i am not aware of...so to confirm that i am not missing any concept i posted the question as it is..
nyways.. i'm sorry, will check this in future.. :oops: