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