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