SOLUTION: in a box there are 8 red, 7 blue and 6 green balls. one ball is picked up randomly. what is the probability that it is neither red nor green?

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Question 378115: in a box there are 8 red, 7 blue and 6 green balls. one ball is picked up randomly. what is the probability that it is neither red nor green?
Found 2 solutions by Fombitz, stanbon:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
If it's not green or red, then it's blue.
P%28B%29=7%2F%288%2B7%2B6%29=7%2F21=highlight%281%2F3%29

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
in a box there are 8 red, 7 blue and 6 green balls. one ball is picked up randomly. what is the probability that it is neither red nor green?
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I guess the ball was blue.
P(blue) = 7/21 = 1/3
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Cheers,
Stan H.