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