Sunday Afternoon Maths XXXVII

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