They are not correct.

If Aryabhata had not invented zero, Newton and Einstein might not have succeeded.

If Aryabhata had not invented zero, another mathematician might have invented it.

If zero had not been invented, technology would not be where it is today.

(Note that I know nothing about maths or the "invention" of zero so I have only been able to make the sentences grammatically correct. I have no idea if they are true.)

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