L, M, N, O, P, Q and R are sitting around a circular table facing the centre. O is sitting between L and R. Q is second to the right of R and P is second to the right of Q. N is not an immediate neighbour of R. Which of the following statements are correct ?
A. P sits to the opposite of N
B. L sits exactly between O and P
C. M is third to the left of N
D. R is second to the right of L
Choose the most appropriate answer from the options given below :

{L, M, N, O, P, Q, R} are sitting around a circular table facing the centre of table. 
"O" is sitting between L and R . 

Case I :

But, now it is also given that Q is the second to the right of R. Hence, that won't be possible in this case because already L is second to the right of R. 
Therefore, this case is eliminated. 

Case II : 

Now it is given that Q is second to the right of R.
And P is second to the right of Q. 

So, the further arrangement goes as :

Now it is also mentioned that "N is not an immediate neighbour of R". So the only possible position for N is in between P & Q. 
Hence, the unoccupied place adjacent to R belongs to M . 

Statement A : P sits to the opposite of N. 
          $$\rightarrow$$ Its false statement because P is sitting adjacent to N. 

Statement B : L sits exactly between O and P.
          $$\rightarrow$$ Its true statement as shown in final arrangement.

Statement C: M is third to the left of N.
          $$\rightarrow$$ Its false statement because M is second to the left of N.

Statement D : R is second to the right of L.
         $$\rightarrow$$ Its true statement as shown in final arrangement. 

Therefore, the answer is B and D are correct.