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