Eight people are sitting in two parallel rows with four people each in such a way that there is equal distance between adjacent persons. 5, 6, 7 and 8 are seated in the same row facing South. 1, 2, 3 and 4 are seated in the same row facing North. 4 and 2 do not sit at the extreme corners of their row. 7 sits at the extreme right end of their row and is exactly opposite 1. 3 sits exactly opposite 8. Who sits at the extreme left end of the row of people sitting facing South?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 8
5, 6, 7 and 8 are seated in the same row facing South. 1, 2, 3 and 4 are seated in the same row facing North. Since the question is concerned with the person sitting at the ends, we can focus on that only.
1. 4 and 2 do not sit at the extreme corners of their row. (They can be placed anywhere in the middle)
2. 7 sits at the extreme right end of their row and is exactly opposite 1.
3. 3 sits exactly opposite 8. (Place 3 at the right end since 2 and 4 cannot be placed there)

Clearly, 8 sits at the extreme left end of the row of people sitting facing south.
Hence, 8 is the correct answer.