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