A coin is tossed twice, what is the probability that at least one tail

1.	A coin is tossed twice, what is the probability that at least one tail occurs?
Answer» Required sample space = S = {HH,HT,TH,TT}. Let A: ‘at least one tail occurs’A = {HT,TH,TT} We have, n(A) = 3, n(S) = 4 = 2² Required probability = P(A) = n(A)/n(s) = 3/4

A coin is tossed twice, what is the probability that at least one tail occurs?

Answer»

Required sample space = S

= {HH,HT,TH,TT}.

Let A: ‘at least one tail occurs’A = {HT,TH,TT}

We have, n(A) = 3, n(S) = 4 = 2²

Required probability = P(A) = n(A)/n(s) = 3/4

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A coin is tossed twice, what is the probability that at least one tail occurs?

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