Seven persons- J, K, L, M, N, O and P were recruited in a five-star hotel.
Their designations in descending order are Concierge, Executive chef, General Manager, Housekeeper, Porter, Waiter and Bartender.
No two persons were recruited for the same post.
Only two persons ranked below O and three ranked above M.
| Designations | Persons |
| Concierge | |
| Executive chef | |
| General Manager | |
| Housekeeper | M |
| Porter | O |
| Waiter | |
| Bartender | |
P is immediately junior than N.
K is senior than N.
| Case 1 | Case 2 |
| Designations | Persons | Persons |
| Concierge | | K |
| Executive chef | | N |
| General Manager | | P |
| Housekeeper | M | M |
| Porter | O | O |
| Waiter | N | |
| Bartender | P | |
The number of persons senior to K is equal to the number of persons junior to L.
Thus, case 1 cancelled.
Therefore, the final arrangement is:
| Designations | Persons |
| Concierge | K |
| Executive chef | N |
| General Manager | P |
| Housekeeper | M |
| Porter | O |
| Waiter | J |
| Bartender | L |
| | New arrangement |
| Designations | Persons | Persons |
| Concierge | K | K |
| Executive chef | N | L |
| General Manager | P | P |
| Housekeeper | M | M |
| Porter | O | N |
| Waiter | J | J |
| Bartender | L | O |
If all the persons are arranged as per the alphabetical order from top to bottom, except the position of P and J, then M ranked immediately below P.
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