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From a box containing 10 balls of red, 30 of white, 20 of blue and 15...

From a box containing 10 balls of red, 30 of white, 20 of blue and 15 of orange, 5 are drawn at random. Find the probability that:

a) All be white

b) They are red, white or blue

c) They are neither red nor blue

Math   Statistics-And-Probability   
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