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Advent calendar 2020

16 December

Solve the crossnumber to find today's number. No number starts with 0.

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

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