Advent calendar 2016

Archive

Show me a random puzzle

Tags

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