SOLUTION: find probability of each set of independent events. Drawing a pair of black socks from a drawer of 4 brown socks, 10 black socks and 6 gray socks

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Question 466033: find probability of each set of independent events.
Drawing a pair of black socks from a drawer of 4 brown socks, 10 black socks and 6 gray socks
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

20 socks: 4brown, 10black, 6gray

P(drawing 2 black) = 10/20*9/19 = 90/ 380 = 9/38