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