Where was paper invented?
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What is the simplified value of (cos A + sin A)(cot A + tan A)?
Which Mughal emperor imprisoned his father and executed his brother?
A difference between 2 longitudes at equator is nearby equivalent to _____ km.
The method of soil conservation in which different crops are grown in alternate rows and are sown at different times to protect the soil from rain wash is called?
Intensive cultivation refers to
As of February 2018, who is the Indian-born CEO of the Nokia company?
The pitch of a sound depends on its ____.