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