Seven persons S, E, V, B, A, D, and U sit in a row facing north. Each has different work experience of 15 years, 7 years, 2 years, 23 years, 19 years, 6 years, and 12 years (not necessarily in this order). The following conditions apply:

- Persons with vowel names have even years of experience and do not sit at either end or exactly in the middle of the row.
- There are three persons sitting between S and the person with 23 years of experience.
- Exactly one person sits between S and A.
- The number of persons to the right of A equals the number of persons to the left of the person whose experience is 2.5 times that of A.
- B neither has the highest experience nor sits adjacent to S.
- The person with the least experience sits second to the left of D.
- U does not have the least experience.
- Both neighbors of B have more experience than B.

Question: Who sits fourth to the left of the person having 7 years of experience?

Question

Seven persons S, E, V, B, A, D, and U sit in a row facing north. Each has different work experience of 15 years, 7 years, 2 years, 23 years, 19 years, 6 years, and 12 years (not necessarily in this order). The following conditions apply:

- Persons with vowel names have even years of experience and do not sit at either end or exactly in the middle of the row.
- There are three persons sitting between S and the person with 23 years of experience.
- Exactly one person sits between S and A.
- The number of persons to the right of A equals the number of persons to the left of the person whose experience is 2.5 times that of A.
- B neither has the highest experience nor sits adjacent to S.
- The person with the least experience sits second to the left of D.
- U does not have the least experience.
- Both neighbors of B have more experience than B.

Question: Who sits fourth to the left of the person having 7 years of experience?

Accepted Answer

**Solution:**

1. Since persons with vowel names (E, A, U) have even years of experience and do not sit at either end or exactly in the middle (4th position), they must occupy positions 2, 3, 5, or 6.

2. The person with the least experience (2 years) sits second to the left of D. This means if D is at position *x*, then the person with 2 years experience is at position *x-2*.

3. U does not have the least experience, so U is not the person with 2 years.

4. There are three persons between S and the one with 23 years experience, so their positions differ by 4.

5. One person sits between S and A.

6. The number of persons to the right of A equals the number of persons to the left of the person whose experience is 2.5 times that of A. This helps determine their relative positions.

7. B neither has the highest experience (23 years) nor sits adjacent to S.

8. Both neighbors of B have more experience than B, so B cannot be at either end.

By carefully placing the persons according to these conditions, the arrangement is:

Positions: 1  2  3  4  5  6  7
Persons:  D  A  U  S  E  B  V

Experience (years): 19 7 12 15 6 2 23

- The person with 7 years experience is A at position 2.
- Fourth to the left of A (position 2) means position 2 - 4 = position -2, which is not possible, so we count from the right side (since they face north, left is to their left).

Actually, since they face north, left means towards position 1.

Counting four places to the left of the person with 7 years (position 2):
- 1st left: position 1 (D)
- 2nd left: no position (out of range)

So the question likely means fourth to the left in the row (positions 1 to 7).

Alternatively, the person with 7 years is at position 5 (if we reassign correctly).

Re-examining the arrangement with all conditions, the correct seating is:

Positions: 1  2  3  4  5  6  7
Persons:  V  A  U  S  E  B  D

Experience: 23 7 12 15 6 2 19

- Person with 7 years is A at position 2.
- Fourth to the left of A (position 2) is position 2 - 4 = position -2 (invalid).

Hence, the person with 7 years must be at position 6.

Final arrangement:

Positions: 1  2  3  4  5  6  7
Persons:  D  A  U  S  E  B  V

Experience: 19 7 12 15 6 2 23

- Person with 7 years is A at position 2.
- Fourth to the left of position 2 is invalid.

Therefore, the question's answer is the person sitting fourth to the left of the one having 7 years experience is **A**.

**Answer:** A

Answer

Answer

Answer