Facts of India -4

1. The value of "pi" was first calculated by the Indian Mathematician Budhayana in the 6th century, and he explained the concept of what is known as the Pythagorean Theorem.

2. Algebra, trigonometry and calculus also orignated from India.

3. Quadratic equations were used by Sridharacharya in the 11th century.

4. The largest numbers the Greeks and the Romans used were 106 whereas Hindus used numbers as big as 10*53 ( i.e 10 to the power of 53 ) with specific names as early as 5000 B.C. during the Vedic period. Even today, the largest used number is Tera: 10*12( 10 to the power of 12 ).

5. India was the only source for diamonds to the world untill 1896