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