A bag contains 7 red balls and 5 white balls and 3 black balls All the balls drawn at random find the probability of (i) red/white (ii) not black
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Red ball in the bag=7
White ball in the bag=5
Black balls in the bag=3
Probability=no.of all possible outcomes/no.of favorable outcomes
i) probability of red balls=7/15
Probability of white balls=5/15=1/3
ii) probability of not black balls=12/15=4/5
White ball in the bag=5
Black balls in the bag=3
Probability=no.of all possible outcomes/no.of favorable outcomes
i) probability of red balls=7/15
Probability of white balls=5/15=1/3
ii) probability of not black balls=12/15=4/5
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