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Praetorian
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anandnk
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Paul
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gmatblast
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Do not think this is ETS level question.

For second part I would think that the answer would be

= [(45/100) * (700C8 * 300C4 / 1000C12)]/ [{(45/100) * (700C8 * 300C4 / 1000C12)} + {(55/100) * (300C8 * 700C4 / 1000C12)}]

It is basically a conditional probability problem

The required probability = Probability of getting the desired configuration (8 black and 4 red) from a bowl having more black / probability of getting the desired configuration (8 black and 4 red) from ALL the bowls

Praet,

Do you know the answer?
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Paul
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Yes, I think the answer is good. By the way, for those of you who need to fine tune their probability/combination skills (and want that 700+ score), here is a link and a document giving very good explanations (especially the last 3 problems).

https://www.gmatclub.com/phpbb/viewtopic.php?t=1585

dowload the word document. I clearly understood this complicated problem after reading that document!
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anandnk
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I agree with gmatblast. I hope correct answer will be posted.
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Paul
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Why?! Why do you leave us to our misery after posting such a beautiful problem? :drunk

(by the way, congrats for becoming CEO) :king



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