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# The probability that it will rain in NYC on any given day in

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Manager
Joined: 07 Jun 2006
Posts: 109

Kudos [?]: 33 [0], given: 0

The probability that it will rain in NYC on any given day in [#permalink]

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09 Oct 2006, 11:44
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

The probability that it will rain in NYC on any given day in July is 30%. what is the probability that it will rain on exactly 3 days from July 5 to July 10 ?

Kudos [?]: 33 [0], given: 0

Senior Manager
Joined: 01 Oct 2006
Posts: 494

Kudos [?]: 39 [0], given: 0

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09 Oct 2006, 13:05
Probablity of rain is 30/100=0.3
Probability of no rain 70/100=0.7

Probablity of rain on 3 days is 6c3(0.3)^3(0.7)^3

What is OA?

Kudos [?]: 39 [0], given: 0

09 Oct 2006, 13:05
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