Manoj
2004-07-16 03:20:37 |
Probability Question--VERY IMPORTANT plz
What is the minimum number of people needed in a room to have over 50% probability that there are two people with the same birthday? For the purpose of this riddle, assume the year has 365 days (no February 29).
|
Juggler
2004-07-16 04:44:28 |
Re: Probability Question--VERY IMPORTANT
Please don't put puzzles in the forum, it is unfair on all the members who post their puzzles in the correct manner.
Also, the puzzle you have put here is already on this site, check out this link.
http://perplexus.info/show.php?pid=486 |
Gamer
2004-07-17 22:23:20 |
Re: Probability Question--VERY IMPORTANT plz
You could search through the forum. :) If you have a problem, just look through the archives and it should be easy to find :) |
Jonatan Bank
2004-09-25 08:40:18 |
Re: Probability Question--VERY IMPORTANT plz
I believe it should be: 365 + (365/2) + 1 (to get over 50 %)
Answer: 548.5 persons - one ought to be split in half ;D, round it up to 549 and I think this is the right answer. |
Zack
2004-09-27 14:00:30 |
Re: Probability Question--VERY IMPORTANT plz
where are the archives?? |
Corey
2004-09-28 19:35:56 |
Re: Probability Question--VERY IMPORTANT plz
Um, Actually Gamer, if there are any more people in the room than there are days
in a year(365) than some two people would HAVE to have the same birthday and
therefore the number has to be less than 365. |
Corey
2004-09-28 19:37:59 |
Re: Probability Question--VERY IMPORTANT plz
Oh, I meant to type Jonatan Bank. Sorry, Gamer. |
