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GATE 2021 MT – Question 49

Engineering Mathematics · Probability and statistics · 2 marks · Numerical answer

A coin is tossed three times. Given more heads than tails, the probability of exactly one tail is ______ (two decimal places).

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Correct answer: 0.75 to 0.75

Explanation

More heads than tails in three tosses means HHH or one of HHT,HTH,THH. These four outcomes are equally likely, and three have exactly one tail. Probability is **3/4=0.75**.