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