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