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Bag A contains 4 green and 3 red balls and bag B contains 4 red and 3 green balls. One bag is taken at random and a ball is drawn and noted to be green. The probability that it comes from bag B, is

A

`2/7`

B

`2/3`

C

`3/7`

D

`1/3`

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The correct Answer is:
C
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