How many persons sit between S and X?

X and N are immediate neighbors of each other. Only two persons sit between X and R. R sits fifth to the right of Z, who is not an immediate neighbor of N. S sits third to the left of Z and is third from one of the extreme ends of the line. V sits second to the right of K and is an immediate neighbor of Z. M sits exactly between R and V. Here Case 1 gets eliminated. More than three persons sit between M and N, who sits third to the left of Q. There are no seats to the right of Q. Here, Case 3 gets eliminated and hence the final arrangement is,