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