Advent calendar 2015

Archive

Show me a random puzzle

Tags

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