Question

Three coins are tossed once find the probability of getting at most 2 tails

Answer 1

Total outcomes are HHH,HHT HTT TTT THH TTH THT HTH
the probablity of at most 2tail
Probablity of getting 1tali+probablity of getting2 tails+proba lity of getting 0tails
3/8+3/8+1/8=7/8
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