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Zorluk: OrtaSeating Arrangement

Seven journalists—F, G, H, I, J, K, and L—are seated in a single straight row for a press briefing. Some of them are facing North, while others are facing South. The following conditions apply to their seating arrangement:

- I sits at one of the extreme ends of the row and faces South.
- F sits third to the left of I, and both face the same direction.
- Only two people sit between F and L.
- Persons sitting at the extreme ends face opposite directions to each other.
- G sits second to the left of L, and G faces North.
- The immediate neighbors of G face opposite directions to each other (if one faces North, the other faces South).
- J sits to the immediate left of K, but K is not an immediate neighbor of F.
- H faces a direction opposite to that of J.

Based on the above information, who sits exactly between G and L, and which direction are they facing?

  1. H, facing NorthCevap
  2. B
    H, facing South
  3. C
    J, facing North
  4. D
    K, facing South

Cevap

The person sitting exactly between G and L is H, and they are facing North.
By following the constraints sequentially, a single deterministic line is formed from left to right: I (South), K (South), J (South), F (South), G (North), H (North), L (North). Based on this layout, G is at position 5 and L is at position 7. The person between them is H at position 6. The rule stating G's neighbors face opposite directions forces H to face North because G's other neighbor, F, faces South.

Adım Adım Çözüm

1
Determine the positions of I and F.
I is at Position 1 (facing South), and F is at Position 4 (facing South).
I is at an extreme end and faces South. For F to sit third to the left of I (who is facing South), I must be at the leftmost end (Position 1). Positions 2, 3, and 4 are to I's left. Both face the same direction.
2
Locate L and G, and determine their facing directions.
L is at Position 7 (facing North), and G is at Position 5 (facing North).
There are two people between F (Pos 4) and L, placing L at Position 7. The extreme ends face opposite directions, so L faces North. G sits second to the left of L. Since L faces North, left is toward the center, placing G at Position 5. We are given that G faces North.
3
Deduce the facing direction of Position 6.
The person at Position 6 faces North.
G (Pos 5) has two immediate neighbors: Position 4 (F, facing South) and Position 6. Because G's neighbors face opposite directions to each other, the person at Position 6 must face North.
4
Place J, K, and H into the remaining seats (Positions 2, 3, and 6).
K is at Position 2 (facing South), J is at Position 3 (facing South), and H is at Position 6 (facing North).
J and K must sit together, so they occupy Positions 2 and 3. K cannot be next to F (Pos 4), so K is at Position 2 and J is at Position 3. J sits immediate left of K; for Position 3 to be left of Position 2, K must face South. H takes the only remaining seat at Position 6.
5
Verify final directions and answer the question.
H faces North, and J faces South.
H (Pos 6) faces North as established in Step 3. H must face the opposite direction of J, meaning J faces South (which matches our finding in Step 4). Therefore, H sits exactly between G and L and faces North.

Anahtar Kavram

Linear Seating Arrangement with Mixed Facing Directions
Tahmini Süre:2m 0s
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Seating Arrangement

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