1.

In a plane there are 37 straight lines of which 13 pass through point A and 11 pass through the point B. Besides, no three lines pass through one point, no line passes through both A and B, and no two lines are parallel. Then the total number of intersection points of the lines are

Answer»

In a plane there are 37 straight lines of which 13 pass through point A and 11 pass through the point B. Besides, no three lines pass through one point, no line passes through both A and B, and no two lines are parallel.

Then the total number of intersection points of the lines are



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