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