Easy
Level 01: 5 exercises
Level 02: 12 exercises
Medium
Level 03: 11 exercises
Level 04: 15 exercises
Hard
Level 05: 6 exercises
Level 06: 2 exercises
Special
Level 07 (stat.unbestimmt):9 exercises
Level 08 (Weggrößen):4 exercises
Level 09 (Kraftgrößen):4 exercises