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