Sunday Afternoon Maths XXXVI

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