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There are 2 parallel line segments AB and CD in a plane. AB contains 12 marked points whereas CD contains 8 marked points. How many triangles can be formed by using these marked points as vertices?
A. \((12!\cdot 28)+(8!\cdot 66)\)
B. \(12!\cdot 8\)
C. \(^{20}C_3\)
D. \(864\)
E. \(1024\)
OA D
There are 2 parallel line segments AB and CD in a plane. AB contains 12 marked points whereas CD contains 8 marked points. How many triangles can be formed by using these marked points as vertices?
A. \((12!\cdot 28)+(8!\cdot 66)\)
B. \(12!\cdot 8\)
C. \(^{20}C_3\)
D. \(864\)
E. \(1024\)
OA D
