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January 25, 2015

January 25, 2015

Posted by **Anonymous** on Saturday, March 1, 2008 at 10:04pm.

I think it would be 1/2 but the answer is 1/3 and I have no idea where you would get that answer.

- Probability -
**drwls**, Saturday, March 1, 2008 at 10:21pmThree things can happen with equal probability on the fateful toss when "at least one" is heads:

Coin A heads; Coin B heads

Coin A heads, Coin B tails

Coin A tails; Coin B heads

That makes one out of three with both heads

- Probability -
**Anonymous**, Wednesday, December 21, 2011 at 6:42pmBob flipped a coin 200 times with the following results:120 heads, 80 tails. Based on these results what is the experimental probability that Bob will get a tail on the next flip.

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