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Option 4 : S and R

People: P, Q, R, S, T, U and V.

1) Q is sitting fourth to the left of T.

2) Only one person is sitting in the immediate left of Q.

(So, T is sitting second from the right end.)

[ alt="UP Police Constable IQ FT8 15 17" src="//storage.googleapis.com/tb-img/production/18/12/UP%20Police%20Constable_IQ_FT8_15_17.PNG" style="width: 373px; height: 61px;">

3) Neither Q nor T is an immediate neighbour of P.

[ alt="UP Police Constable IQ FT8 15 18" src="//storage.googleapis.com/tb-img/production/18/12/UP%20Police%20Constable_IQ_FT8_15_18.PNG" style="width: 375px; height: 60px;">

4) V is sitting fourth to the right of S.

5) Neither U nor V is sitting at any of the extreme ends.

[ alt="UP Police Constable IQ FT8 15 19" src="//storage.googleapis.com/tb-img/production/18/12/UP%20Police%20Constable_IQ_FT8_15_19.PNG" style="width: 375px; height: 60px;">

Thus, we get the final seating arrangement as follows:

[ alt="UP Police Constable IQ FT8 15 20" src="//storage.googleapis.com/tb-img/production/18/12/UP%20Police%20Constable_IQ_FT8_15_20.PNG" style="width: 374px; height: 61px;">

Hence, S and R are sitting at extreme ends.
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