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