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Coloured balls are distributed in three bags as shown in the table below, a bag is selected at random and then two balls are randomly drawn from the selected bag. They happen to be black and red. what is the probability that they came from bag 1 ?

Bag Colour of the ball
Black white Red
I 1 2 3
II 2 4 1
III 4 5 3

 

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A)
go **** urself
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