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