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