Posted by Twg on Saturday, August 8, 2009 at 1:53pm.
# of black cards/total cards * number of remaining black cards/remaining total cards.
This is an "and" relationship.
So if there are 26 black cards in a deck you would take 26/52*24/50 right??
you probability of picking the first card is right, but (since one black card has already been picked without replacement) the probability of picking the second black card is 25/51.
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