# Advent calendar 2018

## 9 December

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

subscribe

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

Not Roman numerals

Breaking Chocolate

Square and cube endings

List of all puzzles