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