Ancient History Art And Culture
Find out the odd one

Ptolemy: Written a geographical treatise on India
Hiuen-Tsang: Acquired knowledge of Indian society through literature
AI-Biruni: Given valuable account about Harshavardhana
Megasthenes: Describes about the Indo-Persian relations

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Ancient History Art And Culture
During the Gupta Empire, the term "UPARIKARA" was used for

It was a voluntary offering by people to the king
An extra tax levied on all subjects
Periodic supplies of fruits, firewood, flowers etc
King's customary share of the production normally amounting to 1/6th of the production

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