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