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