Q. In which period of the Indian History , the number zero as well as decimal system were invented?
Answer: Gupta
Notes: The concept of zero as a number, and the use of a symbol to represent it, are generally attributed to the ancient Indian mathematician and astronomer Aryabhata. In his book "Aryabhatiya," which was written in the 5th century CE, Aryabhata described the concept of zero as a placeholder in positional notation, and he used a dot to represent it. This was a significant development in the history of mathematics, as it allowed for the creation of more sophisticated mathematical systems.