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A card is drawn from a deck of 52. Given that the card is RED, what is the probability that it's a KING?
A$1/52$
B$2/52$
C$1/13$
D$1/26$
Answer & Solution
Correct answer: C. $1/13$
P(king | red) = P(red king) / P(red) = (2/52) / (26/52) = 2/26 = 1/13. Conditional probability reduces the sample space.
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