From Zero To Hero

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1.
I am practically nothing. When I lead a group, it's strength stays the same, but if I follow it, it seems that the group's strength increases ten times!! I am neither negative or positive about things, but nobody hates me for that. I am Indian born, but some people say that I am Arabian. I am as simple as a circle, but nothing amounts to me.
What am I?

Answer: Zero
The word zero came into the English language via French zéro from Italian zero, Italian contraction of Venetian zevero form of 'Italian zefiro via ṣafira or ṣifr. In pre-Islamic time the word ṣifr (Arabic صفر) had the meaning 'empty'. Sifr evolved to mean zero when it was used to translate śūnya (Sanskrit: शून्य) from India. The first known English use of zero was in 1598.

2.
On 31st December Aryabhatta asked his wife .
"What are the chances that you will let me go out with my friends?"
When his wife answered he..............
Please complete the sentence.

Answer :Invented zero
Aryabhata or Aryabhata I was the first of the major mathematician-astronomers from the classical age of Indian mathematics and Indian astronomy. His works include the Āryabhaṭīya and the Arya-siddhanta.
His contribution to mathematics, place value system and zero:
The place-value system, first seen in the 3rd-century Bakhshali Manuscript, was clearly in place in his work. While he did not use a symbol for zero, the French mathematician Georges Ifrah argues that knowledge of zero was implicit in Aryabhata's place-value system as a place holder for the powers of ten with null coefficients.

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