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IBM Research
Monthly challenges and elegant problems from IBM Research, including Ponder This.
341 Problems0 solved
IBM-001A belt around the earthGeometry · ApproximationOpenIBM-002Shaking hands in a partyCombinatorics · LogicOpenIBM-003Tennis balls in a bucketCombinatorics · OptimizationOpenIBM-004Equilateral triangleGeometry · ProofOpenIBM-005Magic Star of DavidCombinatorics · SearchOpenIBM-006Sorting pancakesAlgorithm · Graph TheoryOpenIBM-007Cutting frosted cakeGeometry · Fair DivisionOpenIBM-008Removing snowCalculus · ModelingOpenIBM-009Water glass center of massGeometry · Center of MassOpenIBM-010A leashed sheep eats grassGeometry · AreaOpen