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