Tibeto-Burman , Indo-Aryan speakers and Tai-Kadai speakers. [27] Forty-five languages are spoken by different communities, including three major language families: Austroasiatic (5), Sino-Tibetan (24) and Indo-European (12). Three of the spoken languages do not fall in these families. There is a high degree of bilingualism . Major religions are Hinduism (64.9%)