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OpenStudy (anonymous):
If 2 cards are drawn from a deck of 52 cards, what is the expected number of spades?
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OpenStudy (anonymous):
A. 0.75 B. 0.25 C. 0.50 D. 0.47
OpenStudy (anonymous):
C
OpenStudy (anonymous):
0 spades - 39/52*38/51 1 spade - 2*13/52*39/51 2 spade - 13/52*12/51 Expected number shall be 0*P(0)+1*P(1)+2*P(2) This gives 0.5
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