Advent calendar 2015

Archive

Show me a random puzzle

Tags

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