Six people, A, B, C, D, E and F are sitting in a row, facing the north. Only two people are sitting to the right of C. A is sitting second to the left of D. B is sitting to the immediate right of A. F is sitting second to the right of D. Who is sitting second to the left of E?

Seven persons, A, B, C, D, E, F, and G, are sitting in a row facing north. Only six persons sit to the left of D. Exactly four persons sit between E and F. B sits third to the right of F. G sits to the immediate left of A. How many persons sit between C and A?

Seven persons M, N, O, P, X, Y, and Z are sitting in a row facing North. Only two persons sit to the right of N. Only two persons sit between N and Z. Only two persons sit between O and Y. Y sits to the immediate left of N. P sits to the immediate right of X. Who sits third from the left end of the row?