Mark M. answered • 11/25/16
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nCr = n! / (r!)(n - r)!
8C2 = 8! / (2!)(8 - 2)!
Can you calculate?
Diana L.
asked • 11/25/16How many lines do the points determine?
In a plane there are 8 points, no 3 of which are collinear. How many lines do the points determine?
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