A bag contains 4 red and 8 black balls. A ball is drawn from the bag. What is the probability of getting a red ball ?
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Answer:A bag contains 5 red and 4 black balls
A bag contains 4 red and 4 black balls, another bag contains 2 red and 6 black balls. One of the two bags is selected at random and a ball is drawn from the bag which is found to be red. Find the probability that the ball is drawn from the first bag
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total red balls = 4
total black balls = 8
total no. of balls = 12
probability of getting a red ball
= 4/12
= 1/3
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