Which of the following is NOT a North East Indian sister state?

Odisha Manipur Meghalaya Tripura

Odisha

The correct answer is Option (1) → Odisha Odisha is NOT a North East Indian sister state. The North East Indian sister states are Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland, and Tripura. Odisha, on the other hand, is a state located in eastern India and is not part of the North East region.