Suppose that coloured balls are distributed in 3 indistinguishable boxes as follows:
Boxes: B1, B2, B3
Red 2, 4, 3
White 3, 1, 4
Blue 5, 3, 3
A box is selected at random from which a ball is drawn at random.
(i) Find the probability that the ball is red.
My Ans: 1/3
(ii) Given that the ball is red, what is the probability that box 3 was selected?
My Ans: 1/30
Are my answers correct?

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@welshfella what about ii? I have a hunch that it is wrong.

Oh Hold on!
I can't have woke up this morning yet!

Forget what I've said already

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