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