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