| Giver | Post | Date |
| Aditi10 | Re: For non-zero integers a, b, c and d, is ab/cd positive? | 07-Jun-2018 |
| NJ17 | Re: For non-zero integers a, b, c and d, is ab/cd positive? | 07-Nov-2016 |
| TheLostBear | Re: For non-zero integers a, b, c and d, is ab/cd positive? | 14-Aug-2016 |
| shenoyaditi | Re: For non-zero integers a, b, c and d, is ab/cd positive? | 24-Dec-2015 |