Advent calendar 2015

Archive

Show me a random puzzle

Tags

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