# Advent calendar 2018

## Archive

Show me a random puzzle**Most recent collections**

#### Sunday Afternoon Maths LXVII

Coloured weightsNot Roman numerals

#### Advent calendar 2018

#### Sunday Afternoon Maths LXVI

Cryptic crossnumber #2#### Sunday Afternoon Maths LXV

Cryptic crossnumber #1Breaking Chocolate

Square and cube endings

List of all puzzles

## Tags

quadratics christmas multiplication menace prime numbers multiples floors functions money proportion factorials colouring squares regular shapes dice averages probability area rectangles complex numbers addition indices advent partitions volume games balancing star numbers parabolas triangle numbers sums surds sport shape algebra factors lines perimeter rugby integers planes angles probabilty ave remainders geometry coordinates square numbers clocks doubling odd numbers square roots dodecagons cryptic clues polygons numbers chess shapes books folding tube maps irreducible numbers time palindromes crossnumbers unit fractions coins graphs grids logic wordplay hexagons ellipses routes sum to infinity dates cube numbers mean people maths bases percentages sequences means differentiation arrows division trigonometry 2d shapes calculus pascal's triangle 3d shapes integration digits symmetry taxicab geometry cryptic crossnumbers cards circles chalkdust crossnumber fractions speed triangles perfect numbers scales spheres crosswords number chocolate## 19 December

Today's number is the number of 6-dimensional sides on a 8-dimensional hypercube.