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