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