Advent calendar 2018

Archive

Show me a random puzzle

Tags

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