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Note: Birthdays are identical if their month and date matches up. Year, hour, minute, seconds, are not part of the requirement.
edited 1×, last 14.04.10 07:02:51 am
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Off Topic A risky wager.
A risky wager.
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Note: Birthdays are identical if their month and date matches up. Year, hour, minute, seconds, are not part of the requirement.
edited 1×, last 14.04.10 07:20:49 am
also, 20 people are mostly friends and family so you should know when is their bday
In fact, it's even an unfair game. I calculated the chance, that no two people have the same birthday. So the chance, that two people have the same birthday is 100%- my calculated chance. Depends on which side you have to chose when your friend makes the wager!
DC has written
ah crap, you are right
I guess that changes alot of things
Bloodshot has written
Well, depends, as at 23 people it just nears 50%, so I want to know how much I'm betting.
did you look that up on wikipedia?
The chances 2 people don't share the same birthday in a party of 20 people is:
(365!/(365^n (365-n)!)) for n = 20,
so that's about 58.8%. If my odds are better than 10:7, i'm taking it
If the odds are 1:1,
I'm winning 0.588 * (2 * amount) - amount in a long term
correct if wrong(hey , i ain't a math god)
(knew this one, but then with a football team)
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