Subject
Quantitative Aptitude
Topic
Probability
Three unbiased coins are tossed.What is the probability of getting at least 2 heads?
Three unbiased coins are tossed.What is the probability of getting at least 2 heads?
ক)
1/4খ)
1/2গ)
3/4ঘ)
1/3Explanation
Here S= {TTT, TTH, THT, HTT, THH, HTH, HHT, HHH}. Let E = event of getting at least two heads = {THH, HTH, HHT, HHH}. P(E) = n(E) / n(S) = 4/8= 1/2Related questions
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