This question asks to return the flipped input variable, but test for equality with the input variable...
radius of a spherical planet
find the roots of a quadratic equation
Is My Wife Wrong?
Summation of array
Remove collinear points in a set of 2D points defining a polygon
Probabilities - Balls and urns - 02
Non trivial identities - summation
A shooting competition
Geometrical meaning of determinant
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