Advent calendar 2016

Archive

Show me a random puzzle

Tags

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