Advent calendar 2015

Archive

Show me a random puzzle

Tags

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