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