Advent calendar 2023

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