Subject
Quantitative Aptitude
Topic
Probability
Three unbiased coins are tossed. What is the probability of getting at most two heads ?
Three unbiased coins are tossed. What is the probability of getting at most two heads ?
ক)
4/3খ)
2/3গ)
3/2ঘ)
3/4Explanation
Let S be the sample space. Here n(S)= = 8 Let E be the event of getting atmost two heads. Then, n(E) = {(H,T,T), (T,H,T), (T,T,H), (H,H,T), (T,H,H), (H,T,H)} Required probability = n(E)/n(S) = 6/8 = 3/4.Related questions
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