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