Q31 of 98 Page 705

A bag contains 8 red, 2 black and 5 white balls. One ball is drawn at random. What is the probability that the ball drawn is not black?

Total numbers of elementary events are: 8 + 2 + 5 = 15


Let E be the event of drawing not black ball


Number of non-favourable events = numbers of outcome with white ball drawn = 2/15


P(non- black drawn) = 1 – 2/15 = 13/15

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