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