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Probability 17 Online
OpenStudy (anonymous):

student government sold 400 tickets for a raffle. they sell tickets for $1. an officer draws one winning ticket from a box. if you've purchased 10 tickets, what's the probability you'll win

OpenStudy (anonymous):

i'm guessing 1/40

OpenStudy (mrbaconqwerty):

I would say that to

OpenStudy (kropot72):

If you had purchased all 400 tickets, the probability of having the winning ticket is 400/400. If you had purchased 200 tickets, the probability of winning would be 200/400. Therefore if you purchased 10 tickets, the probability of winning is 10/400.

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