Uploaded April 2011 | Updated September 2026, 1 hour ago

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A puzzle involving a simple experiment to determine the centre of mass of a 2D irregular shape.
What is the probability that the centre of mass is located within the triangle formed by the experiment?
Suprisingly, the puzzle has an exact answer, based upon just one simple assumption: That there is as much chance the centre of mass is to one side of the line, as there is it being on the other side.