Sunday Afternoon Maths XIII

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