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