12th Class Mathematics Sample Paper Maths Olympiad Model Paper-7

  • question_answer
    A pack of playing cards was found to contain only 51 cards. If the first 13 cards which are examined are all red, then the probability that the missing card is black, is

    A)  \[\frac{1}{3}\]                         

    B)  \[\frac{2}{3}\]

    C)  \[\frac{1}{2}\]                         

    D)  \[\frac{{{25}_{{{c}_{13}}}}}{{{51}_{{{c}_{13}}}}}\]

    E)  None of these

    Correct Answer: B


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