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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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Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

Sunday Afternoon Maths LXV

Cryptic crossnumber #1
Breaking Chocolate
Square and cube endings

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

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