📅 NSB 2021🎓 HS🔄 Round 5#️⃣ Q5🌟 BONUS✍️ Short Answer
A set of 15 points has 4 that are collinear, another 5 that are collinear, and the remaining 6 are also collinear. Otherwise, no three points in the set are collinear. How many lines contain at least two of the 15 points?
✔️Answer:77
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