Advent calendar 2018

Archive

Show me a random puzzle

Tags

tiling lists combinatorics determinants christmas books consecutive integers division proportion people maths shape rectangles ellipses cryptic crossnumbers tournaments medians algebra multiplaction squares bases integers quadratics sport dates powers perimeter sum to infinity matrices shapes graphs arrows speed coordinates indices square roots means axes wordplay routes consecutive numbers spheres complex numbers remainders sums averages probabilty quadrilaterals lines cube numbers dominos gerrymandering money trigonometry crosswords digital products elections menace factors regular shapes calculus cubics triangle numbers colouring geometry fractions ave folding tube maps planes range star numbers neighbours number digital clocks multiplication products xor sequences sets the only crossnumber floors square grids digits functions hexagons games perfect numbers volume addition area numbers chocolate albgebra palindromes crossnumbers geometric means balancing median square numbers dice logic differentiation binary 2d shapes irreducible numbers surds unit fractions prime numbers odd numbers time scales percentages circles decahedra factorials partitions pascal's triangle triangles polygons angles chalkdust crossnumber rugby parabolas advent expansions prime factors tangents coins clocks dodecagons mean cryptic clues doubling cards 3d shapes multiples pentagons integration squares polynomials even numbers probability grids symmetry taxicab geometry geometric mean chess