7th is Piyush's position from the left end of the line.
1. Find Yudveer's position:
• Yudveer is 20th from the right end.
2. Find Piyush's position from the right end:
• Since everyone is facing North, moving to the "left" means moving further towards the left end (and further away from the right end).
• Piyush = 20 + 8 = 28th from the right end.
3. Convert to position from the left end:
• Formula: Position from Left = (Total Students - Position from Right) + 1
• Piyush's Position = 34 - 28 + 1 = 7