| Answer | Crossword Clue |
|---|---|
| HIT | Number one single |
| RPM | Single number?: Abbr. |
| NINE | Last single-digit number |
| ENPLEIN | On a single number, in roulette |
| UNARY | Acting on a single number, mathematically |
| ONE | Number of single-syllable U.S. states |
| TITLEIST | Brand name often appearing over a single-digit number |
| PAVAROTTI | Singer with the Guinness Book record for greatest number of curtain calls at a single performance (165) |
| ONE | Number of unique lineups U2 has had, as well as the name of a single from "Achtung Baby" |
