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प्रश्न
A bag contains 3 white, 5 black and 2 red balls, all of the same shape and size. A ball is drawn from the bag without looking into it, find the probability that the ball drawn is:
not a red ball.
उत्तर
There are 3+5=8 balls which are not red
Favourable number of events= P(A)=8
Hence, P (not getting a red ball) =` (P(A))/(P(n))=8/10=4/5`
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