Sixth prime minister was Rajiv Gandhi and president was Neelam Sanjiva Reedy

6th Prime Minister of India:
The 6th Prime Minister of India was Rajiv Gandhi. He served as Prime Minister from 1984 to 1989. Rajiv Gandhi was the son of former Prime Minister Indira Gandhi and the grandson of India's first Prime Minister, Jawaharlal Nehru. He became Prime Minister after the assassination of his mother, Indira Gandhi, in 1984.

President of India:
The President of India during Rajiv Gandhi's tenure as Prime Minister was Giani Zail Singh. He served as the 7th President of India from 1982 to 1987. Giani Zail Singh was a prominent Indian politician who had previously held various ministerial positions in the Indian government before becoming President.

Rajiv Gandhi and Giani Zail Singh:
During their time in office, Rajiv Gandhi and Giani Zail Singh worked together to address various issues facing India. Rajiv Gandhi focused on modernizing India's economy and improving infrastructure, while Giani Zail Singh played a ceremonial role as the head of state.

Legacy:
Rajiv Gandhi's tenure as Prime Minister was marked by both achievements and controversies. He introduced several initiatives to promote technology and education in India but also faced criticism for his handling of the Bofors scandal. Giani Zail Singh's presidency was characterized by his efforts to uphold the Constitution and promote national unity.

Overall, Rajiv Gandhi and Giani Zail Singh played important roles in shaping India's political landscape during the 1980s. Their leadership and contributions continue to be remembered in Indian history.