| Value | Category | Cases | |
|---|---|---|---|
| 1 | difficult | 152 |
31.1%
|
| 2 | easy | 137 |
28.1%
|
| 3 | neutral | 60 |
12.3%
|
| 4 | verydifficult | 117 |
24%
|
| 5 | veryeasy | 22 |
4.5%
|