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