| Giver | Post | Date |
| 2000Chap | A grid of light bulbs measures x bulbs by x bulbs, where x > 2. If 4 l | 18-Mar-2025 |
| shrvan7h | A grid of light bulbs measures x bulbs by x bulbs, where x > 2. If 4 l | 29-Aug-2024 |
| Varonos | A grid of light bulbs measures x bulbs by x bulbs, where x > 2. If 4 l | 30-Mar-2021 |