A bag P contains 3 blue and 5 red balls....

A bag P contains 3 blue and 5 red balls. Another bag Q contains 4 blue and 6 red balls. A ball is drawn at random from one of the bags and is found to be red. The probability that it is from bag Q is

`24/49`

`28/49`

`36/49`

`42/49`

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