Find the probability that among the balls drawn, there is at least one ball of each colour.

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.CT: Chapter Test
Problem 30CT: In a batch of 20 tires, 2 are known to be defective. If 4 tires are chosen at random, find the...
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A box contains 6 red, 4 white and 5 black balls.
A person draws 4 balls from the box at random.
Find the probability that among the balls
drawn, there is at least one ball of each colour.
Transcribed Image Text:A box contains 6 red, 4 white and 5 black balls. A person draws 4 balls from the box at random. Find the probability that among the balls drawn, there is at least one ball of each colour.
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