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Persons in a row facing North. M is 3rd left of N. 5 between M and K. S is 2nd right of K. O is 5th right of R (R is immediate neighbor of M). L is 2nd left of O. K is 3rd from one extreme end. O is not immediate neighbor of N. Persons between R and L = persons to right of O. How many people in the row?
- 18
- 15
- 17
- 19
Correct answer: 17
Solution
After systematically applying all constraints: M-N (M 3rd left of N), K (5 between M&K), S (2nd right of K), R (neighbor of M), O (5th right of R), L (2nd left of O), K (3rd from end), and using the balancing condition (persons between R&L = persons right of O), total = 17.
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