Srinivasa Ramanujan, born in 1887, worked as a shipping clerk in Madras (Chennai). He was
obsessed with numbers and mathematics. It is estimated that Ramanujan conjectured or proved over
3,000 theorems, identities and equations. He claimed that most of his ideas came to him in dreams.
He wrote to Hardy, academic at Cambridge. Ramanujan claimed that he had devised a formula
that calculated the number of primes up to a hundred million with generally no error. Hardy was the only
one to recognize Ramanujan’s genius and brought him to Cambridge University. The two collaborated on
many mathematical problems.
There is a story that Hardy arrived at Ramanujan’s house in a cab numbered 1729. Hardy claimed
that the number was totally uninteresting. Ramanujan, however, averred, on the spot, that, on the
contrary, it was actually a very interesting number mathematically. He said that it was the smallest
number representable in two different ways as a sum of two cubes. Further he showed how 1729 was
the sum f the cubes of 1 and 12 and was also the sum of the cubes of 9 and 10. Such numbers are now
sometimes referred to as ‘taxicab numbers’.
Very early in life, Ramanujan fell into depression and illness. After a period in a sanatorium and a
brief return to his family in India, he died in 1920 at the tragically young age of 32. write the
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it is not in the syllabus ok cube surface area is 6a ka square ok
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