Sunday Afternoon Maths XXXVII

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