Circle (facing centre) — who is to Pappu's left? Six girls sit in a circle facing the centre. Subbu is to the left of Pappu. Revathi is between Subbu and Nisha. Aruna is between Pappu and Keerthana. Who sits to the left of Pappu?

Introduction / Context:
In circular seating with everyone facing the centre, a person’s left neighbor is the immediate clockwise neighbor.

Given Data / Assumptions:

• “Subbu is to the left of Pappu” ⇒ Subbu is Pappu’s immediate clockwise neighbor.
• “Revathi is between Subbu and Nisha.”
• “Aruna is between Pappu and Keerthana.”

Concept / Approach:
Once “left of Pappu” is explicitly stated as Subbu, the query is answered directly; the remaining clues ensure a consistent full circle exists.

Step-by-Step Solution:
Identify Pappu. Place Subbu to Pappu’s immediate left (clockwise).Arrange the remaining four so that Revathi falls between Subbu and Nisha on one arc and Aruna between Pappu and Keerthana on the other arc; such an arrangement is feasible and does not affect who sits immediately left of Pappu.

Verification / Alternative check:
Construct any concrete clockwise order satisfying both “between” constraints (e.g., Pappu–Subbu–Revathi–Nisha–… and Pappu–…–Aruna–Keerthana–…), confirming Subbu’s position remains Pappu’s left neighbor.

Why Other Options Are Wrong:
They contradict the explicit statement “Subbu is to the left of Pappu.”

Final Answer:
Subbu