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