Question 1116222
12 points are drawn on a sheet of paper (and no three points are collinear). How many different quadrilaterals can be made? 
Note:: 4 points determine the four corners of a quadrilateral.
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Ans:: 12C4 = (12*11*10*9)/(1*2*3*4) = 495 
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Cheers,
Stan H.
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