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?

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 people, M, N, O, P, X, Y, and Z are sitting in a row, facing north. Only two people sit to the left of N. Only three people sit between N and P. Only one person sits between P and X. Y sits to the immediate left of O. M is not an immediate neighbor of P. How many people sit to the right of Z?