Maximum number of points of intersection -permutations and combinations-part2

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Maximum number of points of intersection -permutations and combinations

1. The number of points of intersection of 4 circles and 5 lines
2. In a plane there are exactly 37 straight lines of which 13 passes through the point A and exactly 11 passes through the point B , no three lines passes through one point , no lines passes through two points A and B (other than given lines) and no two are parallel , then the number of intersection points the lines have

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