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Re: An unfair coin comes up heads 60% of the time and tails 40% of the tim [#permalink]
60℅=3/5

So, 3 times heads and 2 times heads => (3/5)*(3/5)*(3/5)*(2/5)*(2/5)
Now Here order matters because first throw can result in tail and second throw can result in head and so on......

So We will multiply by 5!/(3!*2!)

Thus answer E.

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Re: An unfair coin comes up heads 60% of the time and tails 40% of the tim [#permalink]
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Re: An unfair coin comes up heads 60% of the time and tails 40% of the tim [#permalink]
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