Question

write the statement of Brahma Gupta's theory (628A.D.)

Answer 1

A Gandharva Marriage (Sanskrit: गन्धर्व विवाह, pronounced gənd̪ʱərvə vɪvaːhə) is one of the eight classical types of Hindu marriage. This ancient marriage tradition from the Indian subcontinent was based on mutual attraction between two people, with no rituals, witnesses or family participation. The marriage of Dushyanta and Shakuntala was a historically celebrated example of this class of marriage.

Answer 2

he was the first to use zero as a number
he was a great mathematician