1. A bag contains 2 red marbles, 3 green marbles and 4 blue marbles. A marble is picked at random from the bag. What is the probability that the marble is not a blue marble ?





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  • By: anil on 05 May 2019 01.40 am
    Without blue marbles, there are 2 red marbles and 3 green marbles.
    Therefore, there are 5 marbles in all to choose the required 1 from.
    Probability that the marble is ot a blue marble = 5C1/ 9C1
                                                                                       = $$frac{5}{9}$$
    Therefore, the correct option is option  B.
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