SOLUTION: at least one head appears in three tosses of a fair coin

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Question 853009: at least one head appears in three tosses of a fair coin
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
P(at least one head)+P(no heads)=1
There are 2^3 or 8 possible outcomes.
Only one is TTT.
P%281H%29%2B1%2F8=1
P%281H%29=7%2F8