Six boys are sitting in a row facing south. Gaurav is second to the right of Akash who is at one of the end. Prem is at fourth position to the left of Raman. Jatin and Nitin sit together. How many boys are sitting to the left of Nitin?

All of them are facing south, and Gaurav is second to the right of Akash who is at one of the end, => Akash is at the left end (facing south).

Prem is at fourth position to the left of Raman, => Raman is at the rightmost end.

Jatin and Nitin sit together, which is quite clear but any of them can sit at second or third place.

Thus, final arrangement is :

$$\therefore$$ We cannot determine as to how many boys are sitting to the left of Nitin.

=> Ans - (D)