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riddles >> putnam exam (pure math) >> Probably ...oops Probability Zone
(Message started by: kathuria on Dec 23rd, 2005, 5:07am)

Title: Probably ...oops Probability Zone
Post by kathuria on Dec 23rd, 2005, 5:07am
On an average a country faces draught once in every 10 years ... Whats the probability that the same country will not be facing draught in next 30 years....?
:(

Title: Re: Probably ...oops Probability Zone
Post by SMQ on Dec 23rd, 2005, 6:27am
Wouldn't it just be [hide](9/10)^30 ~= 4.24%[/hide]?

--SMQ



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