Posted by Twg on Saturday, August 8, 2009 at 1:53pm.
You are dealt two cards successively without replacement from a standard deck of 52 playing cards. Find the probability that both cards are black.

MATH Prob.  PsyDAG, Saturday, August 8, 2009 at 1:59pm
# of black cards/total cards * number of remaining black cards/remaining total cards.
This is an "and" relationship.

MATH Prob.  Twg, Saturday, August 8, 2009 at 11:54pm
So if there are 26 black cards in a deck you would take 26/52*24/50 right??

MATH Prob.  PsyDAG, Sunday, August 9, 2009 at 11:24am
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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