Advent calendar 2021

Archive

Show me a random puzzle

Tags

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