Five people, L, M, N, R and S are sitting in a straight row, facing north, but not necessarily in the same order. Only M sits between L and S. N sits to the immediate right of S. R sits to the immediate left of L. Who sits at the second position from the left end?

L

Answer: L

In this question first place R to the extreme left and place L to the immediate right of R.

Now place M between L and S and finally place N to the only place left