Two cards are drawn at random from an ordinary deck of playing cards.?
Two cards are drawn at random from an ordinary deck of playing cards. The first is not replaced before the second is drawn. What is the probability that
a.) Both cards are red?
b.) At least one card is a heart?
c.) The second card is black given that the first card is red?
d.) The second card is a face card, given that the first card was not a face card?
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a) (26 C 2)/(52 C 2)
b) 1 - (39 C 2)/(52 C 2)
c) 26/51
d) 12/51