Chapter 4: Counters and Arithmetic
Balls are numbered. We ought to be able to take balls out of urns and do something with the numbers; for example, add up the numbers, look for a ball with a particular number, sort the balls according to their numbers and so on. This chapter introduces numeric operations.
- Arithmetic
- Counters
- Count the Balls
- Count the Balls (again)
- Sum the Balls
- Search for a Particular Number
- Problems
Check the appendix if you want to see a quick list of available arithmetic operations and examples of usage.