So how many people do i have to lock in one room, To get 50% change that there are at least 2 people share the same birthday (Year not included)?
2007-03-23 05:37:43 · 9 answers · asked by Warmonger 2 in Travel ➔ Asia Pacific ➔ China
Exactly 23 peoples
2007-03-23 05:44:13 · answer #1 · answered by THEGURU 6 · 0⤊ 1⤋
1
2007-03-23 17:59:52 · answer #2 · answered by Anonymous · 0⤊ 0⤋
You need 23 people in a room for the chances to be better than 50% of a pair of people sharing the same birthday. It's all to do with the number of pairings - 253 possible pairings.
2007-03-23 12:42:32 · answer #3 · answered by Geoff M 5 · 0⤊ 0⤋
100
2007-03-23 21:44:36 · answer #4 · answered by Anonymous · 0⤊ 0⤋
100 or 50
2007-03-23 12:39:58 · answer #5 · answered by Butterfly 1 · 0⤊ 1⤋
183
2007-03-23 12:41:12 · answer #6 · answered by The Machine 2 · 0⤊ 1⤋
at least 23
2007-03-23 12:40:10 · answer #7 · answered by Veronica M 2 · 1⤊ 0⤋
Yes, 23 is correct. As usual, Wikipedi know more about it: http://en.wikipedia.org/wiki/Birthday_paradox
2007-03-23 12:44:04 · answer #8 · answered by Anonymous · 1⤊ 0⤋
What?
2007-03-23 12:40:35 · answer #9 · answered by Superdog 7 · 0⤊ 1⤋