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