Advent calendar 2015

Archive

Show me a random puzzle

Tags

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