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There are five cards, two red and three black. You draw two cards, without replacement. What is the probability that both have the same color?

 May 5, 2020
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P(two red)  =  (2/5)(1/4)  = 2/20  = 1/10

 

P(two black)   =  (3/5)(2/4)  = 6/20  = 3/10

 

Add the probabilities =   4/10  =   2 / 5

 

 

cool cool cool

 May 5, 2020

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