Seven security guards- J, K, L, M, N, O and P were deployed for duty at the Rashtrapati Bhavan on different days of the week, starting from Monday to Sunday.
K was deployed immediate before P and immediate after M.
Neither M nor K was deployed on Monday and Thursday.
| | Case 1 | Case 2 |
| Days | Guards | Guards |
| Monday | | |
| Tuesday | M | |
| Wednesday | K | |
| Thursday | P | |
| Friday | | M |
| Saturday | | K |
| Sunday | | P |
Two guards were deployed between J and O.
Thus, case 1 is invalid.
| | Case 2 |
| Days | Guards |
| Monday | J/O |
| Tuesday | |
| Wednesday | |
| Thursday | J/O |
| Friday | M |
| Saturday | K |
| Sunday | P |
Neither N nor O was deployed after L.
Therefore, the final arrangement is:
| Days | Guards |
| Monday | O |
| Tuesday | N |
| Wednesday | L |
| Thursday | J |
| Friday | M |
| Saturday | K |
| Sunday | P |
Guard P was deployed on Sunday.
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