Sunday Afternoon Maths LXI

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