| Value | Category | Cases | |
|---|---|---|---|
| Difficult | 51 |
22.7%
|
|
| Easy | 14 |
6.2%
|
|
| Neither easy nor difficult | 70 |
31.1%
|
|
| Rather difficult | 74 |
32.9%
|
|
| Rather easy | 16 |
7.1%
|