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