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