3 coins are tossed it's number of possible out comes

Number of possible out comes? Probablitiy of getting at least one head? Getting at most 2 heads?
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1 Answer

Outcomes:

HHH HHT HTH HTT THH THT TTH TTT

Probability of at least one head: (8-1)/8=⅞.

Probability of at most two heads: (8-1)/8=⅞.

 

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