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