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