Sunday Afternoon Maths LXI

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