SOLUTION: A box contains 20 balls out which 7 are white balls, 5 are black balls, 6 are red balls and 2 are yellow balls. If four balls are drawn at random. What is the probability that b

Question 1184400: A box contains 20 balls out which 7 are white balls, 5 are black balls, 6 are
red balls and 2 are yellow balls. If four balls are drawn at random. What is
the probability that balls of only one two colours and only three colours
are drawn?
Found 2 solutions by Edwin McCravy, ikleyn:
Answer by Edwin McCravy(20059) (Show Source): You can put this solution on YOUR website!
A box contains 20 balls out which 7 are white balls, 5 are black balls, 6 are
red balls and 2 are yellow balls. If four balls are drawn at random. What is
the probability that balls of only ~~one two~~ colours and only three colours
are drawn?
Notice that the "~~one two~~" doesn't make sense. Edwin

Answer by ikleyn(52798) (Show Source): You can put this solution on YOUR website!
.

In Math, not every combination of words makes sense.

Only selected combinations of words do make sense.

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