Directions (84-87) : Study the following information carefully and answer the questions given below:
A certain number of persons sit in a row facing north direction. Two persons sit between N and Q who is the only neighbour of B. W sits 5th to the left of L who sits immediately right of N. W sits exactly middle of the row. The number of persons sit between W and N is the same as the number of persons sit between W and T . Z sits 2nd to the right of H. Three person sits between T and H. O sits just left of A and just right of E who doesn’t sit adjacent to W.

How many persons sit between E and W?

Correct Answer: Two

Let us analyze the given information step-by-step to determine the seating arrangement of all persons in the row.

1. Analyze Q, B, N, and L:
- Q is the only neighbour of B. This means B must be at one of the extreme ends of the row, and Q sits adjacent to B.
- Two persons sit between N and Q.
- L sits immediately right of N.

2. Determine W's position and the row length:
- W sits 5th to the left of L.
- W sits exactly in the middle of the row.
- The number of persons sitting between W and N is the same as the number of persons sitting between W and T.

Let us place them relative to each other (facing North):
If W is placed at position 13, then:
- W sits 5th to the left of L ⇒ L is at position 18.
- L sits immediately right of N ⇒ N is at position 17.
- Persons between W (pos 13) and N (pos 17) = 3 persons (positions 14, 15, 16).
- Thus, 3 persons must sit between W and T ⇒ T is at position 9 (13 - 4 = 9).
- Two persons sit between N (pos 17) and Q. Since Q is at an extreme end, Q is at position 20, and B is at position 21.
- Since W (position 13) is in the exact middle of the row, and B is at position 21 (right end, 8 positions to the right of W), there must also be 8 positions to the left of W. Thus, the row has a total of 25 seats (positions 1 to 25).

3. Determine positions of H, Z, E, O, and A:
- Three persons sit between T (pos 9) and H. So H can be at position 5 (or 13, but W is at 13, so H is at position 5).
- Z sits 2nd to the right of H ⇒ Z is at position 7.
- O sits just left of A and just right of E. This means E, O, and A sit together in the continuous sequence: E - O - A.
- We are given that E doesn't sit adjacent to W (W is at position 13, so E cannot be at position 12 or 14).
- The available continuous three seats to the left of W are positions 10, 11, 12 (where E would be at pos 10, O at pos 11, A at pos 12). Here, E at position 10 is not adjacent to W (position 13).

4. Evaluate the number of persons between E and W:
- E is at position 10.
- W is at position 13.
- The persons sitting between E and W are at positions 11 (O) and 12 (A).
- Therefore, exactly 2 persons sit between E and W.