An urn contains 7 white balls and 3 red balls. Three balls
Chapter 13, Problem 53(choose chapter or problem)
An urn contains 7 white balls and 3 red balls. Three balls are selected. In how many ways can the 3 balls be drawn from the total of 10 balls: (a) If 2 balls are white and 1 is red? (b) If all 3 balls are white? (c) If all 3 balls are red?
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