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