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