In a retail inventory model, the optimal stock level (?) is determined by the following equation. What value will come in place of the question mark (?)? (?)2 + 40 = 122 + 112

The Dandi March, also known as the Salt Satyagraha, was led by which influential leader?

Which act formally granted independence to India, marking the end of British rule?

Who was the key figure in establishing the Indian National Congress?