Two Plus Two Older Archives

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- Probability (http://archives2.twoplustwo.com/forumdisplay.php?f=23)

- - Coin flips (http://archives2.twoplustwo.com/showthread.php?t=292942)

Michael Emery

07-14-2005 06:22 PM

Coin flips

whats the probability?

i flip a coin 10 times.

the desired outcome is 9 heads and one tail. the results may come in any order.

winner gets the coin.

BeerMoney

07-14-2005 08:19 PM

Re: Coin flips

10*.5^10 = 1/102.4

Michael Emery

07-14-2005 08:35 PM

Re: Coin flips

Thanks, Beer. I knew you were the only one smart enough on 2+2 to solve this problem. Everyone else here was just avoiding it because they didnt know.

Mike Emery

Siegmund

07-14-2005 09:14 PM

Re: Coin flips

The original post said "a coin", not "a fair coin." Where'd that .5^10 come from?

Online coin flipping is rigged, man.

SheetWise

07-15-2005 01:49 AM

Re: Coin flips

Nine heads and one tail, I don't care which order they come in -- I'm going to be exhausted. Keep the coin.

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