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Advent calendar 2016

21 December

Today's number is a multiple of three. The average (mean) of all the answers that are multiples of three is a multiple of 193.
Tags: averages, mean

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

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