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प्रश्न
Three coins are tossed together. Find the probability of getting at least one head and one tail
उत्तर
When 3 coins are tossed together,
Total no. of possible outcomes = 8 {HHH, HHT, HTH, HTT, THH,THT, TTH, TTT}
Probability of an event =`"No.of favorable outcomes"/"Total no.of possible outcomes"`
E⟶ getting at least one Head & one Tail
No. of favourable outcomes = 6 {HHT, HTH, HTT, THH, THT, TTH}
Total no. of possible outcomes = 8
P(E) =6/8 =3/4
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