Bag I contains 3 red and 4 black balls and Bag II contains 4 red and 5 black balls. One ball is transferred from Bag I to Bag II and then a ball is drawn from Bag II. The ball so drawn is found to be red in colour. Find the probability that the transferred ball is black.
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Step-by-step explanation:
Bag 1
red=3
black=4
total no of balls=7
Bag 2
red=4
black=5
total no of balls=9
the p of taking a red ball from bag 2=4/9
the p of taking a black ball from bag 1=4/7
hope it helps u.............
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