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OpenStudy (anonymous):
Six differently colored balls (red, blue, green, orange, purple, and white) are placed in a basket. Without looking, three balls are removed. What is the total number of ball combinations that include a red ball?
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OpenStudy (kropot72):
The number of combinations that include a red ball is given by 5C2. \[5C2=\frac{5!}{2!3!}\]
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