I'm posting one puzzle, riddle, math, or statistical problem a day. Try to answer each one and post your answers in the comments section. I'll post the answer the next day. Even if you have the same answer as someone else, feel free to put up your answer, too!
Tuesday, February 15, 2011
At a movie theater, the manager announces that a free ticket will be given to the first person in line whose birthday is the same as someone in line who has already bought a ticket. You have the option of getting in line at any time. Assuming that you don't know anyone else's birthday, and that birthdays are uniformly distributed throughout a 365 day year, what position in line gives you the best chance of being the first duplicate birthday?
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First in line. You'll get 1 ticket and another free :)ReplyDelete
agree with kyle.. buy a ticket then be in the first of the line.. makes you the first person to match your own birthday (which in logic terms is always true)ReplyDelete
But are you still in line after you've already bought your ticket?ReplyDelete
You should Be the 20th in lineReplyDelete
My experience with classes is that 22 is the 'trip' number that seems to be the number that is needed to have a match.ReplyDelete