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