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