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Manager
Manager
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Joined: 02 Sep 2008
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Raffle tickets.... [#permalink] New post 27 Apr 2009, 20:06
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9. If a person purchases 15 of the 3,000 tickets sold in a raffle that awards one prize, what is the probability that this person will not win?
(A) 0
(B) 1/200
(C) 1/2
(D) 199/200
(E) 1
Manager
Manager
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Joined: 02 Mar 2009
Posts: 138
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Re: Raffle tickets.... [#permalink] New post 27 Apr 2009, 21:59
P(Win) = 15/3000 = 1/200
Therefore P(Not win) = 199/200
Director
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Joined: 27 Jun 2008
Posts: 549
WE 1: Investment Banking - 6yrs
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Re: Raffle tickets.... [#permalink] New post 28 Apr 2009, 05:13
win

not win = 1-win (since probability cannot be >1)

>1-15/3000 i.e 1-1/200

D
Re: Raffle tickets....   [#permalink] 28 Apr 2009, 05:13
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