Solutions
India states with maximum international borders:
Pakistan—Gujarat, Rajasthan, Punjab, Jammu and Kashmir. (Total of 4 states)
China—Jammu and Kashmir, Himachal Pradesh, Uttarakhand, Sikkim, Arunachal Pradesh. (Total of 5 states).
Nepal— Uttarakhand, Uttar-Pradesh, Bihar, West-Bengal, Sikkim. (Total of 5 states).
Bhutan—Sikkim, West-Bengal, Assam, Arunachal Pradesh. (Total of 4 states).
Bangladesh—West Bengal, Assam, Meghalaya, Tripura and Mizoram. (Total of 5 states).
Myanmar—Arunachal Pradesh, Nagaland, Manipur, Mizoram. (Total of 4 states)