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