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In a series of five football matches between Germany and Arg

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In a series of five football matches between Germany and Arg [#permalink] New post 07 Aug 2012, 06:24
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Question Stats:

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In a series of five football matches between Germany and Argentina , the probability of Germany winning a match is 1/3 and the probability that the match ends in a draw is 1/4. If a win gets the team 2 points, a draw 1 point and a loss 0 Points, What is the probability that Germany will end up in 5 draws in the series?

A. 24/576
B. 125/864
C. 1/25
D. 1/1024
E. 1/5
[Reveal] Spoiler: OA

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Re: In a series of five football matches between Germany and Arg [#permalink] New post 07 Aug 2012, 07:10
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SOURH7WK wrote:
In a series of five football matches between Germany and Argentina , the probability of Germany winning a match is 1/3 and the probability that the match ends in a draw is 1/4. If a win gets the team 2 points, a draw 1 point and a loss 0 Points, What is the probability that Germany will end up in 5 draws in the series?

A) 24/576
B) 125/864
C) 1/25
D) 1/1024
E) 1/5


Since the probability of a draw is 1/4, then the probability of 5 draws in 5 matches is (1/4)^5=1/1024.

Answer: D.

P.S. A lot of irrelevant information in the stem. I guess in the source, there were some additional questions based on the stem.
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Re: In a series of five football matches between Germany and Arg [#permalink] New post 25 Aug 2012, 19:25
+1 D

Yes, it seems not a GMAT question. Usually, the GMAT doesn't provide unnecessary information in Quant questions.
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Re: In a series of five football matches between Germany and Arg   [#permalink] 25 Aug 2012, 19:25
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