Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 24 May 2015, 15:49

### 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

# A man buys 5 tickets in a raffle in which 100 tickets are

Author Message
TAGS:
Intern
Joined: 12 Dec 2004
Posts: 33
Followers: 0

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

A man buys 5 tickets in a raffle in which 100 tickets are [#permalink]  04 Jan 2005, 12:01
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
A man buys 5 tickets in a raffle in which 100 tickets are sold. If
there are three prizes in the raffle, find the probability that the
man:

(a) wins exactly one prize;
(b) wins at least one prize.
Manager
Joined: 29 Jul 2004
Posts: 62
Followers: 1

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

A. 3 prizes of which he wants 1 can be done in (3c1) ways. 97 non prizes of which he wants 4 can be done in (97c4) ways. Total ways to draw 5 out of 100=(100c5). So the answer is (3c1)*(97c4)/(100c5)

B. Same reasoning as above but also for 2 and 3 prizes so [(3c1)*(97c4) + (3c2)*(97c3)+(3c3)*(97c2)]/(100c5)
Similar topics Replies Last post
Similar
Topics:
Raffle tickets 3 20 Feb 2011, 08:26
Raffle tickets.... 2 27 Apr 2009, 20:06
DS: Raffle Tickets - GMATPrep 8 24 Nov 2006, 21:36
In a raffle in which 200 tickets are sold, there are 3 2 06 Nov 2005, 17:15
An a small raffle, there are only 2 prizes, and 30 tickets 7 06 Nov 2005, 17:05
Display posts from previous: Sort by