Six friends are sitting in a circle facing the center. Pramod is to the left…

Concept

When everyone in a circle faces the centre, each person's left hand points along the clockwise direction. So the statement "X is to the left of Y" means X occupies the seat immediately next to Y in the clockwise sense, and "P is between Q and R" means P sits with Q on one side and R on the other.

Application

Fix the seats clockwise using the clues:

1. "Pramod is to the left of Vinod" places Pramod in the seat clockwise-adjacent to Vinod, so the clockwise pair reads Vinod then Pramod.

2. "Tushant is between Pramod and Mayank" puts Tushant next to Pramod and Mayank on either side, extending the clockwise run to Pramod, Tushant, Mayank.

3. "Jignesh is between Vinod and Nitin" puts Jignesh with Vinod and Nitin as neighbours; the only way to close the circle of six is the clockwise order Pramod, Tushant, Mayank, Nitin, Jignesh, Vinod.

4. The person to Mayank's left is the seat clockwise-adjacent to Mayank, which is Nitin.

Cross-check

Read the final clockwise circle Pramod, Tushant, Mayank, Nitin, Jignesh, Vinod and re-test every clue: Pramod indeed sits just clockwise of Vinod; Tushant has Pramod and Mayank as neighbours; Jignesh has Vinod and Nitin as neighbours. All three conditions hold, confirming that Nitin is to the left of Mayank.