Question 6
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12 points lie in a plane, no three on a straight line. How many straight lines can be drawn through pairs of them?
- A 132
- B 220
- C 66 Correct
- D 12
Correct Answer: Option C
Each line uses a pair: 12C2 = 66
Trap: 220 counts triangles (12C3).
Answer: 66
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