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