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Senior Manager
Senior Manager
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Joined: 10 Nov 2010
Posts: 269
Location: India
Concentration: Strategy, Operations
GMAT 1: 520 Q42 V19
GMAT 2: 540 Q44 V21
WE: Information Technology (Computer Software)
Followers: 5

Kudos [?]: 119 [0], given: 22

Raffle tickets [#permalink] New post 20 Feb 2011, 08:26
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

100% (01:10) correct 0% (00:00) wrong based on 5 sessions
Pls chk the image
[Reveal] Spoiler: OA

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Last edited by GMATD11 on 20 Feb 2011, 08:57, edited 1 time in total.
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Kudos [?]: 1180 [0], given: 376

Re: Raffle tickets [#permalink] New post 20 Feb 2011, 08:33
350-101+1 = 250

299-200+1 = 100

Probability = 100/250 = 2/5

Ans: "A"
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Re: Raffle tickets [#permalink] New post 20 Feb 2011, 08:36
Shouldn't the number of tickets with 2 in hundred's digit be 100 - from 200 to 299? Hence, 100 favorable outcomes out of a possible 250 outcomes and hence probability is 100/250 = 2/5. I think answer should be 2/5 and hence A.
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Re: Raffle tickets [#permalink] New post 20 Feb 2011, 19:32
Expert's post
GMATD11 wrote:
Pls chk the image


Reading this question reminded me of something that I like to tell my students:

"When you solve a question, don't just solve that question. Think what you would have done had the question been a little different. Apply as many different variations as you can and try to solve each. That will help you build concept."

e.g. they have made the question a little simpler by giving you that you need numbers with 2 in the hundred's place. What if the question asked for numbers with a 2 (in any place) or numbers with only one 2 (in any place) etc.

The more you analyze the problems, the better you will get at answering tougher questions.
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Re: Raffle tickets   [#permalink] 20 Feb 2011, 19:32
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