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Bag A contains 4 green and 3 red balls a...

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 it is green. The probability that it comes from bag Bis

A

a) 2/7

B

b) 2/3

C

c) 3/7

D

d) 1/3

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