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