Advent calendar 2019

Archive

Show me a random puzzle

Tags

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