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