Direction: Monica, Amar, Akbar and Anthony live in four apartments that are arranged side by side. Only one of the above four persons is the landlord whose apartment is at one end. Amar's apartment is neither next to Monica's apartment nor next to Akbar's apartment. Monica's apartment is not at one end. Amar is not the landlord.
Who lives just beside the landlord?

Let the four side-by-side positions be numbered $1,2,3,$ and $4$ from left to right.
1. Analyze Amar's neighbors:
We are told that Amar's apartment is neither next to Monica's nor next to Akbar's. This means the only person who can live immediately adjacent to Amar is Anthony.
2. Determine Amar's position:
Since Amar has only one possible neighbor (Anthony), Amar must be situated at one of the two outer ends (either Position 1 or Position 4).
3. Identify the landlord's position:
* We are told the landlord lives at one end.
* We are also told that Amar is not the landlord.
* Therefore, since Amar occupies one end, the landlord must occupy the opposite end.

4. Case Setup:
Let's place Amar at Position 1.
* Then the landlord must be at Position 4.
* Since Anthony is Amar's only possible neighbor, Anthony must be at Position 2.
* The remaining spots are Position 3 and Position 4 for Monica and Akbar.
* We are given that Monica's apartment is not at one end, so Monica cannot be at Position 4. Therefore, Monica is at Position 3.
* This leaves Akbar at Position 4 (making Akbar the landlord).

Let's review this final valid layout:

$$\text{[Position 1: Amar] , [Position 2: Anthony] , [Position 3: Monica] , [Position 4: Akbar (Landlord)]}$$

The question asks who lives just beside the landlord (Position 4). The person at Position 3 is Monica.

(Note: If we placed Amar at Position 4 instead, the mirror configuration would yield the exact same adjacent result for Monica).