| Value | Category |
|---|---|
| "999 " | |
| "Don't know " | |
| "I don't know " | |
| "I have no idea " | |
| "NOT APPLICABLE " | |
| "No Such Graduates Hired " | |
| "Not Applicable " | |
| "Not applicable " | |
| "Not applicable hired non so far " | |
| "Not hired any so far " | |
| "Nothing " | |
| "none " | |
| "none not applicable " | |
| "not applicable " | |
| . | |
| 0 | |
| 999 | |
| Not available | |
| dont know | |
| none |