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