Sunday Afternoon Maths LXI

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