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