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