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