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