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