| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very easy | 363 |
14.6%
|
| 2 | Somewhat easy | 814 |
32.7%
|
| 3 | Neither easy nor difficult | 369 |
14.8%
|
| 4 | Somewhat difficult | 644 |
25.9%
|
| 5 | Very difficult | 265 |
10.7%
|
| 6 | Impossible | 31 |
1.2%
|
| 7 | Other | 0 |
0%
|