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


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