Question

What is the maximum number of times 10 squares of same side length can intersect each other?
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Answer 1

Number of ways of selecting two squares from 10 squares= ${}^{10}$C${}_2$
Each pair of squares can meet at maximum of 8 points.
If there are no common points of intersection, maximum number intersections=${}^{10}$C${}_2$ * 8=360