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