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