1.

Um A contains 6 red and 4 black balls and um B contains 4 red and 6 black balls. One ball is drawn at random from um A and placed in um B. Then one ball is drawn at random from um B and placed in um A . If one ball is now drawn from um A, the probability that it is found to be red is

Answer»

`32//55`
`42//55`
`36//55`
none

Answer :A


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