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    Question

    A coin is tossed 9 times. Find the probability of almost

    2 tails.
    A 47/257 Correct Answer Incorrect Answer
    B 23/256 Correct Answer Incorrect Answer
    C 41/256 Correct Answer Incorrect Answer
    D 23/257 Correct Answer Incorrect Answer

    Solution

    Total cases = 29 =512 Probability of ‘0’ tail =9C0 =1 1 tail = 9C1=9 2 tails =9C2=36 Total number of favorable cases = 1+9+36 =46 Probability = 46/512 =23/256

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