Advent calendar 2016

Archive

Show me a random puzzle

Tags

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