Advent calendar 2015

Archive

Show me a random puzzle

Tags

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