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