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