Advent calendar 2020

Archive

Show me a random puzzle

Tags

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