History of question #12457
| When | Who | Action | New State |
|---|---|---|---|
| Raúl González Duque | Answer | Answered | |
| Adriaan Peeters | Answer | Answered | |
| Raúl González Duque | Answer | Answered | |
| Adriaan Peeters | Answer | Answered | |
| Maxxer | Reopen | Open | |
| Raúl González Duque | Answer | Answered | |
| rikostan | Answer | Answered | |
| MathUHenry | Answer | Answered |
