'A Life of the Genius: The Man Who Knew Infinity' is a biography of Indian mathematician _______.

Srinivasa Ramanujan

The correct answer is Option (3) → Srinivasa Ramanujan

- The Man Who Knew Infinity: A Life of the Genius Ramanujan is a biography of the Indian mathematician Srinivasa Ramanujan, written in 1991 by Robert Kanigel.

- The book gives a detailed account of his upbringing in India, his mathematical achievements and his mathematical collaboration with mathematician G. H. Hardy.