a box contains 4 white,3black and 2 red balls.A ball is drawn from this box.find the probability that it is (i) a white ball (ii) a black or red ball). (explain must be required)
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Total balls = 4 + 3 + 2 = 9
White balls = 4
So probability of white ball = 4 / 9
Now next case is if it is red ball or black ball
Favourable odds are = red + black ball = 2 + 3 = 5
So probability = 5 / 9
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