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Pablo plays 3 rounds of a game, in which his chances of winn [#permalink]
22 Jun 2011, 00:34

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Difficulty:

15% (low)

Question Stats:

61% (01:36) correct
39% (00:25) wrong based on 74 sessions

Pablo plays 3 rounds of a game, in which his chances of winning each round are 1/3 ,1/6 , and 1/n, respectively. If n ≠ 0, what is the probability that Pablo wins the first two rounds, but loses the third?

A. 1/18n B. (n-1)/18n C. 1/2n D. (n+2)/2n E. (3n-2)/2n

I am the master of my fate. I am the captain of my soul. Please consider giving +1 Kudos if deserved!

DS - If negative answer only, still sufficient. No need to find exact solution. PS - Always look at the answers first CR - Read the question stem first, hunt for conclusion SC - Meaning first, Grammar second RC - Mentally connect paragraphs as you proceed. Short = 2min, Long = 3-4 min

Re: Pablo plays 3 rounds of a game, in which his chances of winn [#permalink]
09 Sep 2013, 01:49

Expert's post

siddhans wrote:

Pablo plays 3 rounds of a game, in which his chances of winning each round are 1/3 ,1/6 , and 1/n, respectively. If n ≠ 0, what is the probability that Pablo wins the first two rounds, but loses the third?

A. 1/18n B. (n-1)/18n C. 1/2n D. (n+2)/2n E. (3n-2)/2n