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