LZ, MZ, NZ, PZ, QZ, RZ, WZ, and XZ attend a concert and

Solution

 PZ sits third to the left of XZ.  MZ is not the immediate neighbor of either PZ or XZ. So, there are two possible cases.  MZ sits opposite to QZ. QZ either sits to the immediate right of PZ or the immediate left of QZ.  No person sits between WZ and NZ while counting from the right of WZ.  NZ doesn’t sit opposite to XZ. So, case-2 is cancelled because NZ sits opposite to XZ in that case.  Only one person sits between LZ and RZ.  RZ is not the immediate neighbor of QZ. So, LZ sits opposite NZ, and RZ sits immediately left of PZ.   Final arrangement is shown below: It is clear that there are 2 people (MZ and RZ) between NZ and PZ when counted from the right of N. Hence, the correct answer is (C).