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