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