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प्रश्न
A bag contains 5 black, 7 red and 3 white balls. A ball is drawn from the bag at random. Find the probability that the ball drawn is black or white
उत्तर
Total no. of possible outcomes = 15{5 black, 7 red & 3 white balls}
E ⟶ event of drawing black or white
No. of favourable outcomes = 8 {5 black & 3 white}
Probability, P(E) =`"No.of favorable outcomes"/"Total no.of possible outcomes"`
P(E) =8/15
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