Homework Help: Math

Posted by Anonymous on Friday, November 13, 2009 at 11:34am.

What are the odds in favor of getting at least one head in three successive flips of a coin?

Can someone help me figure out how to solve this, please?

Math - bobpursley, Friday, November 13, 2009 at 11:50am
YOu could get
Htt
tHt
ttH
HHt
HtH
tHH
HHH

7 ways to get at least one head, and the probability of getting each one of those is 1/2*1/2*1/2 or 1/8

Pr= 7/8 getting at least one head.

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