Question

who gave the idea of zero
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Answer 1

Answer:  Aryabhata gave the world the digit "0" (zero) for which he became immortal.

Brahmagupta, around 650 AD, was the first to formalize arithmetic operations using zero.

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Answer 2

Brahmagupta
"Zero and its operation are first defined by [Hindu astronomer and mathematician] Brahmagupta in 628," said Gobets. He developed a symbol for zero: a dot underneath numbers.