Srinivasa Ramanujan, an Indian, was the strangest in all of the mathematicians. His mathematical truths were not explained and it was left for other mathematicians to prove it.
And here is one such example. Once Ramanujan was hospitalized due to illness, his friend and British mathematician G.H.Hardy went to see him. Hardy needs to make him active. So, he said
"I had ridden in taxi cab numbered 1729 and it seemed to be dull number."
"No", he replied. And added "It is very interesting number, it is the smallest number expressible as the sum of two cubes in two different ways."
And it took few days for Hardy to understand its meaning.
The two ways are :
1729 = 1^3 + 12^3 = 10^3 + 9^3

