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प्रश्न
Three different coins are tossed together. Find the probability of getting at least two heads.
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उत्तर
When three coins are tossed together, the possible outcomes are
HHH, HTH, HHT, THH, THT, TTH, HTT, TTT
∴ Total number of possible outcomes = 8
Favourable outcomes of at least two heads are HHH, HTH, HHT, THH
∴ Total number of favourable outcomes = 4
∴ P(at least two heads) =`4/8=1/2`
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