Problem Set

41 problems available

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41 problems

ID	Problem	Tags	Diff
1A	Divisible by Three 1A	number theorydivisibilitycounting	800
1B	Nonconsecutive Subsets 1B	combinatoricscountingrecursion	900
1C	Symmetric Squares 1C	algebrasymmetric expressions	900
1F	Skibidi Sequences 1F	combinatoricsprobabilitysequences	1000
2A	Shifted Power Sums 2A	algebrasymmetric expressionspower sums	1000
1D	Shortest Broken Path 1D	geometrycoordinate geometryoptimization	1000
1E	Positive Rational Equation 1E	algebraequationsrational expressions	1000
1G	Coefficient Sums 1G	algebrabinomial theorempolynomials	1100
1H	Fourth-Degree Interpolation 1H	algebrapolynomialsinterpolation	1200
1I	Remainder at Five 1I	algebrapolynomialsmodular arithmetic	1200
1J	Prime Expression 1J	number theoryprimesmodular arithmetic	1200
2B	Cosine Sum 2B	trigonometryroots of unitysequences	1200
2C	Ninth-Degree Equation 2C	algebraequationspolynomials	1200
1L	Telescoping Reciprocals 1L	algebrasequencestelescoping	1300
1K	Incenter Distance 1K	geometrytrianglesincenter	1300
1M	External Angle Bisector 1M	geometrytrianglesangle bisectors	1300
1P	Ordered Pair Equation 1P	number theorydiophantine equationsfactorization	1400
2G	Carries and Binomials 2G	number theorybinomial theoremprime factorization	1400
2F	Totient Product 2F	number theorytotientdivisors	1400
2E	Monkeys in Chairs 2E	combinatoricscountingderangements	1400