S sits second to the left of R, who sits third to the left of O.
P, who sits at an extreme end of the row, sits third to the right of V.
Now,
Case I:
Case II:
Case III:
Q sits immediate left of U, who is not adjacent to P.
Case I:
Case II:
Case III:
More than three people are seated between M and T.
T sits towards the right of M.
Case I:
Case II:
Case III:
N is an immediate neighbour of neither T nor S.
Therefore, the case I and case III are not valid.
This is the final arrangement.
Five people are seated between S and T.
Study Notes
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