a lot of Thank you ...(Rofl)

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- October 20th 2008, 07:38 AMNarek2 probability questions
a lot of Thank you ...(Rofl)

- October 20th 2008, 07:44 AMddt
As to the first: look at the probabilities of the complements:

P(U\E) = ???

P(U\F) = ???

and then look at P(U\(E n F)).

(where U is the "universe", i.e., all events).

As to the second: does it really matter which birthday person1 has? So, say it's January 13. Then look at the birthday of person2. - October 20th 2008, 07:48 AMtester85
Refer to the link below, you will be able to solve the 2nd problem.

Birthday problem - Wikipedia, the free encyclopedia - October 20th 2008, 08:55 AMNarekcant solve the first one!!
I dont get the point .... can you solve it?(Thinking)

- October 20th 2008, 10:58 AMddt
- October 20th 2008, 12:52 PMNarekanswer to birthday problem
we dont know what day is for the first person, so we consider it as 1st january. and now we say, the probability of the second person having the same birthday is :

P= 1 / 366

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is this True???? thank you (Nod) - October 20th 2008, 12:59 PMddt
- October 20th 2008, 02:48 PMNarek
for the first one, no matter how hard I try, I dont understand the concept ... I need to see the solution, please (Wink)

- October 20th 2008, 08:44 PMNarekany suggestion???
any suggestion??? any guide? (Lipssealed)

- October 21st 2008, 01:09 AMCaptainBlack