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