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