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