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Advent calendar 2015

16 December

Today's number is four thirds of the average (mean) of the answers for 13th, 14th, 15th and 16th December.

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Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

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

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