India
India is home to two major language families: Indo-Aryan (spoken by about 74% of the population) and Dravidian (spoken by 24% of the population). Other languages spoken in India come from the Austroasiatic and Sino-Tibetan language families. India has no national language. Hindi, with the largest number of speakers, is the official language of the government. English is used extensively in business and administration and has the status of a "subsidiary official language"; it is important in education, especially as a medium of higher education. Each state and union territory has one or more official languages, and the constitution recognises in particular 22 "scheduled languages".
Languages with official status in India
Communication between the union and states which use Hindi as their official language (classified by the Official Language Rules as "the states in Region A"), and with persons who live in those states, is generally in Hindi, except in certain cases. Communication with a second category of states "Region B", which do not use Hindi as their official language but have elected to communicate with the union in Hindi (currently Gujarat, Maharashtra, and Punjab) is usually in Hindi, whilst communications sent to an individual in those states may be in either Hindi or English. Communication with all other states "Region C", and with people living in them, is in English.