perplexus.info :: Probability : Many heads

Many heads (Posted on 2004-12-13)

What is the expected number of times you must toss a (fair) coin until you get n consecutive heads?

See The Solution Submitted by e.g.

Rating: 4.3333 (3 votes)

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What?

Comment 6 of 6 |

(In reply to Solution by Math Man)

It is actually (2^(n+1))-2.

Posted by Math Man on 2011-06-27 21:49:06

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