| Clue | Source | Date |
|---|---|---|
| 5 and 10, but not V and X | Premier Sunday | 09 Jun 2024 |
| ????? | New York Times | 05 Jul 2023 |
| [aria-label] Mathematical characters, written in a different language | New York Times | 05 Jul 2023 |
| ... They're of Indian origin | ||
| ... They're of Indian origin | New York Times | 01 Dec 2019 |
| Mathematical symbols first used in India |