Question 9

A box contains 5 red marbles, 8 white marbles and 4 green marbles. One marble is taken out of the box at random. What is the probability that the marble taken out will be (i) red ? (ii) white ? (iii) not green?

Answer

Total no. of marbles = 17

(i) Total no. of red marbles = 5

     Probability of getting red marbles = 5/17

(ii) Total no. of white marbles = 8

     Probability of getting white marbles = 8/17

(iii) No. of not green marbles

      = total no. of marbles – no. of green marbles

      = 17 – 4= 13

        Probability of getting not green marbles = 13/17

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