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