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