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