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March 1, 2015

Posted by **bwb** on Thursday, May 6, 2010 at 11:59pm.

The odds for are: 2/3

but I do not know how to figure out the probability of odds against getting exactly two heads in three successive flips.

- math: not sure how to figure out -
**Reiny**, Friday, May 7, 2010 at 1:12am"probability of odds" ? , no such thing

odds and probability are closely related

odds in favour of some event

= prob(event will happen) : prob(event will not happen)

so two heads in 3 flips could be

HHT

HTH

THH, which would be 3 cases out of the 8

prob of exactly two heads out of 3 = 3/5

prob of NOT exactly two heads out of 3 = 5/8

odds against exactly 2 heads out of 3 flips = 5:3

- math: not sure how to figure out -
**help**, Friday, February 22, 2013 at 5:25pmSuppose a coin is biased so that it has the probilities below for landing on heads or tails on a single toss of the coin.

P(h)=0.5020 P(t)=0.4980

If this coin is tossed twice find the probability P(hh)

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