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