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