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    Question

    ‘A’ and ‘B’ play a game. A fair coin is tossed 4

    times. ‘A’ wins if all tosses give different results alternately. What is the probability of ‘A’ winning?
    A 1/4 Correct Answer Incorrect Answer
    B 1/2 Correct Answer Incorrect Answer
    C 1/8 Correct Answer Incorrect Answer
    D 3/8 Correct Answer Incorrect Answer

    Solution

    Total number of outcomes = 2 4 = 16
    Alternating results: (HTHT), (THTH) = 2 outcomes
    Probability that ‘A’ wins = 2/16 = 1/8

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