Sunday Afternoon Maths XXXVII

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