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