2 definitions

table of contents:

1. 2.1 a problem to be solved
2. 2.2 numbers less than 10
3. 2.3 numbers less than 100
4. 2.4 numbers less than a 1000 and less than 1000000
5. 2.5 local definitions let expressions and where clauses
6. 2.6 offside rule
7. 2.7 a note about whole-number arithmetic

exercises: 2 exercises