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- 5 Plus 5 Plus 5
Here a cute little puzzle: look at this equation
and make it correct by only adding one straight stroke (and it must stay an equation
.
[If you are really desperate, you find the solution … - Circle With Points & Intersections
Have a look at this circle with 6 points:
Here the lines between the 6 points on the circle intersect 15 times.
Given n points on a circle with all connecting …
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