| Giver | Post | Date |
| AlfredJohn | a, b, c, and d are integers; abcd ≠ 0; what is the value of cd? | 08-Aug-2020 |
| Bunuel | a, b, c, and d are integers; abcd ≠ 0; what is the value of cd? | 18-Dec-2019 |
| astha91 | a, b, c, and d are integers; abcd ≠ 0; what is the value of cd? | 17-Nov-2019 |
| kavach | a, b, c, and d are integers; abcd ≠ 0; what is the value of cd? | 12-Jan-2019 |
| zngmat | a, b, c, and d are integers; abcd ≠ 0; what is the value of cd? | 08-Aug-2017 |
| wufabif | a, b, c, and d are integers; abcd ≠ 0; what is the value of cd? | 02-Feb-2016 |
| wisep01 | a, b, c, and d are integers; abcd ≠ 0; what is the value of cd? | 03-Mar-2012 |