Biggest possible number
Each student drew two circles and three lines on their piece of paper.
Afterwards they counted the points of intersection (including all points where the circles intersect, the lines intersect and circles and lines intersect).
What is the biggest possible number of such points?
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1 solution
The first line intersects the circles at the most at four points. 4
The second line creates four intersections with the circles, and one with the previous line. 5
The last line gets four intersections from the circles and two from the other two lines. 6
Total 2 + 4 + 5 + 6 = 1 7