JEE Main & Advanced Mathematics Probability Question Bank Definition of probability

  • question_answer
    The probability of getting at least one tail in 4 throws of a coin is   [MNR 1983; Kurukshetra CEE 1998]

    A)                 \[\frac{15}{16}\]  

    B)                 \[\frac{1}{16}\]

    C)                 \[\frac{1}{4}\]       

    D)                 None of these

    Correct Answer: A

    Solution :

                    Required probability \[=1-{{\left( \frac{1}{2} \right)}^{4}}=\frac{15}{16}.\]


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