<P> The prime minister represents the country in various delegations, high level meetings and international organisations that require the attendance of the highest government office and also addresses to the nation on various issues of national or other importance . </P> <P> Per Article 78 of the constitution, the official communication between the union cabinet and the president are through the prime minister . Other wise constitution recognises the prime minister as a member of the union cabinet only outside the sphere of union cabinet . </P> <P> According to Article 84 of the Constitution of India, which sets the principle qualification for member of Parliament, and Article 75 of the Constitution of India, which sets the qualifications for the minister in the Union Council of Minister, and the argument that the position of prime minister has been described as' first among equals', A prime minister must: </P> <Ul> <Li> be a citizen of India . </Li> <Li> be a member of the Lok Sabha or the Rajya Sabha . If the person chosen as the prime minister is neither a member of the Lok Sabha nor the Rajya Sabha at the time of selection, they must become a member of either of the houses within six months . </Li> <Li> be above 25 years of age if they are a member of Lok Sabha or above 30 years of age if they are a member of the Rajya Sabha . </Li> <Li> not hold any office of profit under the Government of India or the Government of any State or under any local or other authority subject to the control of any of the said Governments . </Li> </Ul>

Who become prime minister of india at the age of 81