Apr 01, 2025 • HackerRank Math
nCr table
Jim is doing his discrete maths homework which requires him to repeatedly calculate nCr(n choose r) for different values of n.
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Mar 17, 2025 • HackerRank Math
Find the Point
Consider two points, and . We consider the inversion or point reflection, , of point across point to be a rotation of point around . Given sets of points
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