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