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