Eight persons L, M, N, O, P, Q, R and S work on different designations in a company i.e., MD, COO, CEO, CFO, CTO, CMO, Manager and HR. The order of seniority is same as given i.e., MD is the senior-most designation and HR is the junior-most designation.

Three persons are there between S and L. L works below CMO. N is junior to MD but senior to S. More than three persons work between N and P. Same number of persons are junior to P and senior to M respectively. R is senior to CMO but junior to Q.

Who among the following is CEO of the company?

` XML tags required. Let's construct the output. S

The correct answer is S.

Step-by-Step Explanation:

1. Understand the Hierarchy:
The designations in decreasing order of seniority (from senior-most 1 to junior-most 8) are given as:
1. MD (Managing Director)
2. COO (Chief Operating Officer)
3. CEO (Chief Executive Officer)
4. CFO (Chief Financial Officer)
5. CTO (Chief Technology Officer)
6. CMO (Chief Marketing Officer)
7. Manager
8. HR (Human Resources)

2. Analyze the Conditions Step-by-Step:

Clue A: "Three persons are there between S and L." and "L works below CMO."
Since CMO is at rank 6, the positions below CMO are Manager (7) and HR (8).
• If L is Manager (Rank 7), then counting 3 persons above L gives S at rank 7 - 4 = 3 (CEO).
• If L is HR (Rank 8), then counting 3 persons above L gives S at rank 8 - 4 = 4 (CFO).

Clue B: "N is junior to MD but senior to S."
Since MD is rank 1, N must be placed between rank 1 and the rank of S.
• If S is CEO (Rank 3), then N must be COO (Rank 2).
• If S is CFO (Rank 4), N could be rank 2 or rank 3.

Clue C: "More than three persons work between N and P."
This means the difference in their position ranks must be at least 5 (|Rank of N - Rank of P| ≥ 5).
• Testing the case where S is at Rank 3 (CEO), L is at Rank 7 (Manager), and N is at Rank 2 (COO):
For |2 - Rank of P| ≥ 5, P can only be at Rank 8 (HR), as Rank 7 is occupied by L.
The number of persons between N (2) and P (8) is 5 (ranks 3, 4, 5, 6, and 7), which satisfies "more than three".

Clue D: "Same number of persons are junior to P and senior to M respectively."
Since P is at HR (Rank 8), there are 0 persons junior to P.
Therefore, there must be 0 persons senior to M, which places M at MD (Rank 1).

Clue E: "R is senior to CMO but junior to Q."
The remaining available designations for Q, R, and O are CFO (4), CTO (5), and CMO (6).
Since R is senior to CMO (6) but junior to Q:
• Q is placed at CFO (Rank 4).
• R is placed at CTO (Rank 5).
• The remaining person O is placed at CMO (Rank 6).

3. Final Designation Schedule:
1. MD: M
2. COO: N
3. CEO: S
4. CFO: Q
5. CTO: R
6. CMO: O
7. Manager: L
8. HR: P

Therefore, S is the CEO of the company.