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