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