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