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