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