Sunday Afternoon Maths XXXVI

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