# Probability

If event A=(drawing a king) and event B=(drawing a red card).what is the probability of drawing A or B

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1. there are 26 red cards, and two black kings

28 possibilities in a 52 card deck

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posted by R_scott
2. But the colour of the king not specified and don't forget there are 4 kings in a playing cards.2 red kings and 2 black kings

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posted by Rilwan
3. P(A or B) = P(A)+P(B)-P(A and B)
= 1/13 + 1/4 - 1/13 * 1/4
= 4/13

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posted by oobleck

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