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