# 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

games floors regular shapes remainders percentages pascal's triangle cryptic clues addition square roots squares rectangles colouring ave balancing integration multiples dice division geometry partitions christmas area fractions perimeter 3d shapes symmetry perfect numbers sums calculus sum to infinity algebra folding tube maps dodecagons cube numbers books circles cryptic crossnumbers differentiation number irreducible numbers chess menace doubling dates arrows chocolate integers angles parabolas shape factors crosswords wordplay sport mean people maths probability chalkdust crossnumber graphs 2d shapes unit fractions ellipses scales indices odd numbers functions triangle numbers palindromes factorials sequences time digits coordinates planes hexagons square numbers grids bases polygons speed coins clocks surds logic complex numbers multiplication proportion cards volume crossnumbers prime numbers spheres lines numbers quadratics shapes star numbers money rugby taxicab geometry means averages triangles routes advent probabilty trigonometry## 9 December

Today's number is the number of numbers between 10 and 1,000 that contain no 0, 1, 2 or 3.