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Question

Which 7th-century mathematician and astronomer revolutionized the study of numbers?

This question was previously asked in
SSC CHSL 2025 Tier 1 Question Paper (21-Nov-2025) (Shift 1)
The correct answer is

Brahmagupta

The question asks for the 7th-century Indian mathematician and astronomer who transformed the study of numbers.

Brahmagupta (c. 598-668 CE) was the 7th-century mathematician and astronomer who revolutionized number theory.

In his work Brahmasphutasiddhanta he gave the first clear rules for arithmetic with zero and negative numbers.

Patanjali is associated with the Yoga Sutras and Sanskrit grammar, not mathematics.

Salim Ali was a 20th-century ornithologist known as the 'Birdman of India'.

Srikrishna is not a mathematician relevant to this context.

Hence the 7th-century mathematician and astronomer was Brahmagupta.

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