SOLUTION: in a box there are 10 black and 5 red balls . if one ball is picked up randomly what is the probability that it is black ball.

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Question 337144: in a box there are 10 black and 5 red balls . if one ball is picked up randomly what is the probability that it is black ball.
Answer by Fombitz(32388) About Me  (Show Source):
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10 Black
5 Red
15 Total
P(Black)=10%2F15=2%2F3