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प्रश्न
Three different coins are tossed together. Find the probability of getting exactly 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 exactly two heads are HTH, HHT, THH
∴ Total number of favourable outcomes = 3
∴ P(exactly two heads) =`3/8`
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