Probability questions? - XP Math - Forums

 XP Math - Forums Probability questions?

 07-28-2007 #1 Dr. J Guest   Posts: n/a Probability questions? What's the probability of drawing a king or a red card from a standard deck of cards?
 07-28-2007 #2 asa clark Guest   Posts: n/a 16 out of 52
 07-28-2007 #3 starcraftruinedmylife Guest   Posts: n/a 15/26
 07-28-2007 #4 George B Guest   Posts: n/a every second card is red so 50% (26/52) chance of drawing a red card.there are 4 kings in a deck of 52 cards, so the chances of drawing a king are 7.7% (4/52=1/13).but 2 of the kings are red, so you have to subtract this from the total, otherwise you are double counting the probaility:3.8% (2/52=1/26)so the answer is p(drawing red)+p(drawing king)-p(drawing red king) = 53.9%.

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