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