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

 It is currently 25 Mar 2017, 12:56

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

Futuristic hates studying for the GMAT. He has decided to

Author Message
Director
Joined: 28 Dec 2005
Posts: 755
Followers: 1

Kudos [?]: 15 [0], given: 0

Futuristic hates studying for the GMAT. He has decided to [#permalink]

Show Tags

08 Sep 2006, 15:49
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.

Futuristic hates studying for the GMAT. He has decided to study 6 hours in 4 days. In his spare time, he will borrow Prat's new Apple computer and play games on it. If he can study for 0,1 or 2 hours on a given day, what is the probability that he will not study at all on a given day? (Assume that all study time distributions have equal prob)

A. 3/10
B 4/10
C 5/10
D 6/10
E 7/10

Last edited by Futuristic on 10 Sep 2006, 00:50, edited 3 times in total.
CEO
Joined: 15 Aug 2003
Posts: 3460
Followers: 67

Kudos [?]: 871 [0], given: 781

Show Tags

08 Sep 2006, 16:02
CEO
Joined: 20 Nov 2005
Posts: 2909
Schools: Completed at SAID BUSINESS SCHOOL, OXFORD - Class of 2008
Followers: 25

Kudos [?]: 279 [0], given: 0

Show Tags

08 Sep 2006, 22:06
Prob of studying on day1, day 2 or day3 = 1/3

But prob of studying on day 4 is complex and I am just guessing how to calculate. But will give a shot.

There are 27 total combinations possible for first 3 days.

Out of these
in case of 2,2,2 - 4th day must be 0
in case of 1,2,2 (total 3 cases) - 4th day can be 0,1
in all other 23 cases - 4th day cane be 0,1,2

Now I am stuck!!!!!!
_________________

SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

08 Sep 2006, 22:06
Display posts from previous: Sort by