A building has seven floors numbered one to seven , in such a way that the ground floor is numbered one, the floor above it , number two and so on such that the top most floor is numbered seven . One out of seven people , P,Q,R,S,T, U and V lives on each floor. P lives on fourth floor. T lives on the floor immmediately below U's floor. U does not live on second or the seventh floor. R lives on third floor. Q does not live on a floor immediately above or below R's floor. S does not live on the topmost floor. V does not live on any floor below T's floor. Who lives on the top most floor?

Options

A. Q
B. V
C. T
D. U

Explanation

To solve the problem step by step, we will analyze the information given and fill in the positions of each person on the respective floors.

### Step 1: List the Floors
We have a building with 7 floors, numbered from 1 to 7:
- Floor 1
- Floor 2
- Floor 3
- Floor 4
- Floor 5
- Floor 6
- Floor 7

### Step 2: Place Fixed Positions
From the information given:
1. **P lives on the 4th floor.**
- So we place P on Floor 4.

2. **R lives on the 3rd floor.**
- So we place R on Floor 3.

Now our arrangement looks like this:
- Floor 1: ?
- Floor 2: ?
- Floor 3: R
- Floor 4: P
- Floor 5: ?
- Floor 6: ?
- Floor 7: ?

### Step 3: Analyze U and T
3. **T lives on the floor immediately below U's floor.**
4. **U does not live on the 2nd or the 7th floor.**
- This means U can only live on the 3rd, 5th, or 6th floors. However, since R is on the 3rd floor, U can only be on the 5th or 6th floor.

5. Since T lives immediately below U, if U is on the 5th floor, T must be on the 4th floor, which is not possible since P is already there. Therefore, U must be on the 6th floor, and T must be on the 5th floor.

Now our arrangement looks like this:
- Floor 1: ?
- Floor 2: ?
- Floor 3: R
- Floor 4: P
- Floor 5: T
- Floor 6: U
- Floor 7: ?

### Step 4: Place Q and S
6. **Q does not live on a floor immediately above or below R's floor.**
- Since R is on the 3rd floor, Q cannot be on the 2nd or 4th floors. Therefore, Q must be on the 1st or 7th floor.

7. **S does not live on the topmost floor.**
- This means S cannot be on the 7th floor. Therefore, S must be on the 2nd floor.

Now our arrangement looks like this:
- Floor 1: Q
- Floor 2: S
- Floor 3: R
- Floor 4: P
- Floor 5: T
- Floor 6: U
- Floor 7: ?

### Step 5: Place V
8. **V does not live on any floor below T's floor.**
- Since T is on the 5th floor, V must be on the 7th floor.

Now our final arrangement looks like this:
- Floor 1: Q
- Floor 2: S
- Floor 3: R
- Floor 4: P
- Floor 5: T
- Floor 6: U
- Floor 7: V

### Conclusion
The person who lives on the topmost floor (7th floor) is **V**.