Q29 of 98 Page 705

A box contains 3 blue, 2 white and 4 red marbles. If a marbles is drawn at random from the box, what is the probability that it will not be a white marble?

Total numbers of elementary events are: 3 + 2 + 4 = 9


Let E be the event of not white ball drawn


Numbers of non-favourable outcomes = numbers of white ball drawn = 2


P (white ball) = 2/9


P (E) = 1- 2/9 = 7/9

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