With reference to ancient India (600-322 BC), consider the following pairs : Territorial region : River flowing in the region I. Asmaka : Godavari II. Kamboja : Vipas III. Avanti : Mahanadi IV. Kosala : Sarayu How many of the pairs given above are correctly matched?

Among the 16 Mahajanapadas: (I) Asmaka was located on the banks of the Godavari river in the Deccan — correct. (II) Kamboja was located in the north-west (around modern Afghanistan/Kashmir region); it was not on the Vipas (Beas) river, which flowed through the region of Madra/Trigarta — incorrect. (III) Avanti was located on the Kshipra (Shipra) river with Ujjain as capital, NOT on Mahanadi — incorrect. (IV) Kosala was located on the Sarayu river with Ayodhya/Shravasti as important cities — correct. Hence, only two pairs (I and IV) are correctly matched.