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