Since 1947, there have been 14 different prime ministers. The first few decades after 1947 saw the Indian National Congress' (INC) almost complete domination over the political map of India. India's first prime minister -- Jawaharlal Nehru -- took oath on 15 August 1947. Nehru went on to serve as prime minister for 17 consecutive years, winning four general elections in the process. His tenure ended in May 1964, on his death. After the death of Nehru, Lal Bahadur Shastri -- a former home minister and a leader of the Congress party -- ascended to the position of prime minister. Shastri's tenure saw the Indo-Pakistani War of 1965. Shashtri subsequently died of a reported heart attack in Tashkent, after signing the Tashkent Declaration.

Based on this passage, who was the first prime minester of india? Let's give stream of consciousness first:
The relevant sentence in the passage is: India's first prime minister -- Jawaharlal Nehru -- took oath on 15 August 1947.
So, the final answer is Jawaharlal Nehru.