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