| Giver | Post | Date |
| Shri1211 | GRE Math Challenge #16-O is the center of the circle | 07-Mar-2025 |
| AishwaryaH | GRE Math Challenge #16-O is the center of the circle | 04-May-2023 |
| farse | GRE Math Challenge #16-O is the center of the circle | 09-Feb-2023 |
| saarthakmehta | GRE Math Challenge #16-O is the center of the circle | 12-Aug-2021 |