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