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