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An unfair coin


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3 replies to this topic

#1 ujjagrawal

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Posted 27 July 2012 - 10:30 AM

An unfair coin has the property that when flipped four times, it has the same probability of turning up 2 heads and 2 tails (in any order) as 3 heads and 1 tail (in any order). What is the probability of getting a head in any one flip?
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#2 EventHorizon

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Posted 27 July 2012 - 11:14 AM

Spoiler for answer

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#3 witzar

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Posted 27 July 2012 - 11:45 AM

Spoiler for

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#4 ujjagrawal

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Posted 30 July 2012 - 05:50 AM

Both of you are absolutely correct... Witzar I liked the way with ease you worked it out...
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