Seven people, A, B, C, D, E, F and G are sitting in a straight line, facing north. Only three people sit to the left of D. Only two people sit between D and A. B sits fifth to the right of C. G sits to the immediate right of E but somewhere to the left of A. Who sits to the extreme right?

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**Solution:**

1. There are 7 people: A, B, C, D, E, F, G sitting in a line facing north.

2. "Only three people sit to the left of D" means D is at the 4th position from the left:
   - Positions: _ _ _ D _ _ _

3. "Only two people sit between D and A" means A can be either 1st or 7th position:
   - If A is 1st: A _ _ D _ _ _ (positions 2 and 3 between A and D)
   - If A is 7th: _ _ _ D _ _ A (positions 5 and 6 between D and A)

4. "B sits fifth to the right of C" means B is 5 places to the right of C:
   - So if C is at position 1, B is at position 6.

5. "G sits to the immediate right of E but somewhere to the left of A" means:
   - E and G are adjacent with G immediately right of E.
   - Both E and G are to the left of A.

6. Try placing A at position 7 (extreme right):
   - C at position 1
   - B at position 6 (since B is 5 to right of C)
   - D at position 4 (given)
   - E and G must be adjacent and left of A, so positions 2 and 3.
   - So E at 2, G at 3.
   - F is the only remaining person, so position 5.

7. Final arrangement:
   - Position 1: C
   - Position 2: E
   - Position 3: G
   - Position 4: D
   - Position 5: F
   - Position 6: B
   - Position 7: A

8. Therefore, A sits at the extreme right.

**Answer:** A

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