Advent calendar 2018

Archive

Show me a random puzzle

Tags

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