सदिश (vector) 20î + 50ĵ को एक अज्ञात सदिश में जोड़ा जाता है। यदि परिणामी सदिश 25î + 10ĵ प्राप्त होता है, तो वह अज्ञात सदिश कौन सा है?

The arrival of which commission in India triggered widespread protests, including mass hartals across the country in 1928?

Which of the following leaders was instrumental in initiating and leading India’s struggle for independence?