Consider the following pairs : Hills - Region 1. Cardamom Hills - Coromandel Coast 2. Kaimur Hills - Konkan Coast 3. Mahadeo Hills - Central India 4. Mikir Hills - North-East India Which of the above pairs are correctly matched?

1. Pair 1 is incorrectly matched. The Cardamom Hills are located in the southern part of the Western Ghats in Kerala and Tamil Nadu, while the Coromandel Coast is the southeastern coastline of India. 2. Pair 2 is incorrectly matched. The Kaimur Hills are part of the Vindhya Range in Central India (MP, UP, Bihar), whereas the Konkan Coast is the western coastline of India. 3. Pair 3 is correctly matched. The Mahadeo Hills are part of the Satpura Range located in Madhya Pradesh, which falls within Central India. 4. Pair 4 is correctly matched. The Mikir Hills are located in Assam, south of the Brahmaputra River, which is part of North-East India. Therefore, only pairs 3 and 4 are correctly matched.