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July 23, 2014

July 23, 2014

Posted by **jess** on Sunday, September 6, 2009 at 9:37pm.

in three successive flips of a coin?

- math -
**bobpursley**, Sunday, September 6, 2009 at 10:05pm1/2 * 1/2 * 1/2

- math -
**bobpursley**, Sunday, September 6, 2009 at 10:06pmooops, I misread. One head in three tries, so there are three ways

HTT

THT

TTH

So it is 3*1/2*1/2*1/2

- math -
**Reiny**, Sunday, September 6, 2009 at 11:08pmThe prob of at least one head with 3 coins

= 1 - 1/8

= 7/8

(I excluded the case of all tails)

so the odds in favour of at least one head

= (7/8):(1/8)

= 7:1

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