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All the face cards from a pack of 52 ply...

All the face cards from a pack of 52 plying cards are removed. From the remaining pack half of the cards are randomly removed without looking at them and then randomly drawn two cards simultaneously from the remaining. If the probability that. two cards drawn are both aces. is ` (p (38C_20))/(40C_20 . 20C_2)`.then find the value of

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