| ID | Title | Difficulty |
|---|---|---|
| 470 | Implement Rand10() Using Rand7() | Medium |
| 808 | Soup Servings | Medium |
| 837 | New 21 Game | Medium |
| 1093 | Statistics from a Large Sample | Medium |
| 1227 | Airplane Seat Assignment Probability | Medium |
| 1467 | Probability of a Two Boxes Having The Same Number of Distinct Balls | Hard |