Sunday Afternoon Maths LXI

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