Question

How did the achievements of the Gupta empire make higher-level mathematics possible? A. They invented writing materials that allowed for the easy correction of mistakes. B. They developed the idea of multiplication as repeated addition. C. They discovered the number pi and were the first to calculate the area of a circle. D. They invented the numeral zero and the decimal system of numbers.

Answer 1

A. They invented writing materials that allowed for the easy correction of mistakes

Answer 2

The answer is D. I just took the practice. Hope this helps.