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OpenStudy (xaze):
Help! Will Fan + Medal
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OpenStudy (xaze):
You select a card at random from a standard deck of 52 cards. What is the probability of drawing a… a) a black card? b) a spade? c) a jack? d) a black jack? e) a face card (jack, queen, or king) that is not a heart?
OpenStudy (anonymous):
favorable events to draw a black card=26 total=52 P=26/52=?
OpenStudy (rock_mit182):
since there are 13 clubs and 13 spades the probability for a) is: 13/52 + 13 /52 which is equal to: 26/52
OpenStudy (rock_mit182):
you can simplify 26 /52 = 13/26 = 1/13
OpenStudy (anonymous):
type error 1/2 not 1/13
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OpenStudy (rock_mit182):
lol my bad, that's right 1/2
OpenStudy (xaze):
okay thanks!
OpenStudy (rock_mit182):
YW!
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