Eight persons- A, B, C, D, E, F, G, and H sit around a square table such that four Persons face inside and sit middle of the table. Four faces outside and sit corner of the table.
G sits second left of C. Three person sits between D and B. H sits opposite A but does not sit at the middle of the table. D sits 2nd left of A. F sits second to the right of C. E sits immediate right of B.

Who sits sixth to the left of B?

The correct answer is H.

Let's solve the seating arrangement step-by-step according to the given information:

1. Table Setup and Facing Directions:
- 8 persons: A, B, C, D, E, F, G, H.
- 4 persons sit at the middle of the sides and face inside (towards the center).
- 4 persons sit at the corners and face outside (away from the center).

2. Analyzing the clues:
- "H sits opposite A but does not sit at the middle of the table."
Since H does not sit at the middle of the table, H must sit at a corner (facing outside). Since H sits opposite A, A must also sit at a corner (facing outside).
- "D sits 2nd left of A."
Since A is at a corner facing outside, A's left is in the clockwise direction. Sitting 2nd left of A places D at the middle of one of the adjacent sides (facing inside).
- "Three person sits between D and B."
In an 8-person seating arrangement, sitting 3 persons away means sitting directly opposite. Since D is at a middle position facing inside, B sits directly opposite D at the middle of the opposite side (facing inside).
- "E sits immediate right of B."
Since B is at the middle of a side facing inside, B's right is in the counter-clockwise direction. Therefore, E sits at the corner to the immediate right of B.
- "G sits second left of C" and "F sits second to the right of C."
This means C is midway between G and F. Looking at the remaining spots:
C must sit at a middle position (facing inside).
Since C faces inside:
- C's left is clockwise, so G sits 2 positions clockwise from C.
- C's right is counter-clockwise, so F sits 2 positions counter-clockwise from C.
This perfectly fills the remaining positions around the table.

3. Determining the position 6th to the left of B:
- B sits at a middle position facing inside.
- Counting to the left of B means counting in the clockwise direction around the table.
- Counting 6 positions to the left (clockwise) of B in an 8-person circle is equivalent to counting 2 positions to the right (counter-clockwise) of B.
- Moving 2 positions to the left/clockwise from B leads directly to H (or counting 6 steps clockwise: 1st, 2nd, 3rd, 4th, 5th, 6th step brings us to H).

Therefore, H sits sixth to the left of B.