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Mathematics 11 Online
OpenStudy (anonymous):

An experiment consists of tossing a fair coin 3 times. Find the probability of getting at least one head.

OpenStudy (cggurumanjunath):

TTT, TTH, THT, THH, HTT, HTH, HHT, HHH

OpenStudy (cggurumanjunath):

7/8

OpenStudy (anonymous):

Minus the one that has all three tail, and you're guaranteed to have at least one head. Since total outcome is 8, now you have 7. P = 7/8

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