| Hills | Region |
|---|---|
| 1. Cardamom Hills | Coromandel Coast |
| 2. Kaimur Hills | Konkan Coast |
| 3. Mahadeo Hills | Central India |
| 4. Mikir Hills | North-East India |
Pair 3: Mahadeo Hills are situated in southern Madhya Pradesh and constitute a part of the Satpura Range. This region is considered Central India. Therefore, this pair is correctly matched.
Pair 4: Mikir Hills (now known as Karbi Anglong Plateau) are located in the state of Assam, in North-East India. They are an isolated group of hills, geologically part of the Meghalaya Plateau. This pair is correctly matched.
Pair 1: Cardamom Hills are located in the southern Western Ghats, primarily in Kerala and Tamil Nadu. The Coromandel Coast is situated along the eastern coast of South India. Therefore, this pair is incorrectly matched.
Pair 2: Kaimur Hills form the eastern part of the Vindhyan Range, extending across Madhya Pradesh, Uttar Pradesh, and Bihar. The Konkan Coast lies along the western seaboard of Maharashtra and Goa. Thus, this pair is incorrectly matched.