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