Question

A coin is tossed thrise. what is the probability of getting at least 2 heads, three tails​

Answer 1

Total possible outcomes = 8

(HHH, HHT, HTH, HTT, THH, TTH, THT, TTT)

Probability(E) = Favourable outcomes / Total possible outcomes

Favourable outcomes of getting atleast 2 heads = 4

(HHT, HTH, THH, HHH)

Probability of getting atleast 2 heads = 4/8

=> P(E) = 1/2

Favourable outcomes of getting 3 tails = 1

( TTT )

Probability of getting 3 tails = 1/8

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