What approximate value should come in place of the question mark (?) in the following expression? 98.88% of 1200 + 7.05% of 2100 + (24.11)2 = 81.20% of 1700 + (?)2

Which movement aimed to promote Khadi, a hand-spun and handwoven cloth native to India?

Who were prominent leaders associated with the initial phase of the Telangana Rebellion (1946-1951) against the Nizam's rule and feudal landlords?

What was the immediate trigger for the Revolt of 1857?