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