10th Class Mathematics Probability Question Bank Probability

  • question_answer A bag contains three green, four blue and two orange marbles. If a marble is picked at random, then the probability that it is not an orange marble, is ___.

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

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

    C)  \[\frac{4}{9}\]                       

    D)  \[\frac{7}{9}\]                       

    Correct Answer: D

    Solution :

    Total number of marbles\[=3+4+2=9\]       No. of green and blue marbles \[=3+4=7.\] \[\therefore \] Probability of not getting an orange marble \[=\frac{7}{9}\]


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