## Problem Definition

### Calendar Cube

You are given **two cubes with 6 sides each** (total 12 sides). What digits would you put on each cube for you to be able to **show all the days of the month** with these two cubes?

### Chopped Cube

You are given a** large cube made up of small cubes**. Each side of the large cube is as wide as ten small cubes. Can you calculate the number of small cubes that **make up the outside of the large cube**?

### Exporting ping-pong balls

You are given a task of exporting ping-pong balls. How many ping pong balls do you think you can **fit in a Boeing 747 airplane**?