A coin is tossed three times. What is the probability of getting at least one tail?

To find the probability of getting at least one tail in Tossing a coin three time,let the event is A

we know that Probability = Favourable outcome/total outcome

total outcomes:8

these are

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

Favourable outcome of getting at least one tail:7 these are :{TTT,TTH,THT,THH,HTT,HTH,HHT}

Probability of getting at least one tail

p(E) =7/8

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