Asked by king chris
A bag contains 4 blue marbles, 2 black marbles, and 3 red marbles. If a marble is randomly drawn from the bag, what is probability that it is not black?
1/2
2/9
5/9
7/9
14/19
1/2
2/9
5/9
7/9
14/19
Answers
Answered by
Steve
since 2 of the 9 marbles are black,
p(~black) = 1-p(black) = 1-2/9 = 7/9
p(~black) = 1-p(black) = 1-2/9 = 7/9
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