Sunday Afternoon Maths VLII

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