You have a standard deck of 52 cards. You draw one card from the deck, put it back, and then draw one more. What is the probability that you draw a black card on the first draw and a queen on the second draw?
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OpenStudy (anonymous):
50% for the first try, then 52/4 for next chance :)
OpenStudy (anonymous):
P(a black card on the first draw and a queen on the second draw) = P(a black card on the first draw) * P( a queen on the second draw)
OpenStudy (anonymous):
oh if you mean alltogether probability then @telltoamit is right
OpenStudy (anonymous):
@telltoamit i dont know what to put as the value for the 1st or 2nd draw
OpenStudy (anonymous):
P(a black card on the first draw) = number of black cards/total number of cards
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OpenStudy (anonymous):
@telltoamit I got 1/ 26 but i dont think thats right
OpenStudy (anonymous):
how did u get that..
OpenStudy (anonymous):
i did 2/52
OpenStudy (anonymous):
number of black cards = 26
half are black, half are red