QUESTION
Hard
Ancient History
Prelims 2012
With reference to the scientific progress of ancient India, which of the statements given below are correct?
- Different kinds of specialized surgical instruments were in common use by the 1st century AD.
- Transplant of internal organs in the human body had begun by the beginning of 3rd century AD.
- The concept of the sine of an angle was known in 5th century AD.
- The concept of cyclic quadrilaterals was known in 7th century AD.
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