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