(i) K, L, M, N, O, P and Q are sitting around a circular table facing the centre.
(ii) L sits between N and O.
(iii) K is third to the left of O.
(iv) Q is second to the left of M who is to the immediate left of P.
Which of the following pairs has the first person sitting to the immediate left of the second person?

Q is second to the left of M who is to the immediate left of P.

K is third to the left of O.

Here O and K are possible in two places which are given below in Case(i) and Case(ii).

L sits between N and O.

In Case(i), the above-given condition is not applicable. So this case is eliminated.

According to the above arrangement, from the given options, the pair of LN has the first person sitting to the immediate left of the second person.