A fair coin is tossed three times. What is the probability that exactly two head appear?
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Step-by-step explanation:
▪️Denote the required probability by P.
▪️P = P(A/B) = P(A intersection B)/ P(B)
▪️Now:
▪️A => getting 2 heads in a rowB => exactly two heads occur
▪️A intersection B = { THH, HHT }.
Cardinality is 2.
▪️B = { THH, HTH, HHT }. Cardinality is 3.
▪️Therefore, P = 2/3 = 66%
Hopes it help you❤️❤️
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