Advent calendar 2015

Archive

Show me a random puzzle

Tags

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