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