एक संख्या में पहले 20% की वृद्धि की जाती है और फिर बढ़ी हुई संख्या में 20% की कमी की जाती है। शुद्ध प्रतिशत वृद्धि या कमी क्या है?

The 'Drain of Wealth' theory was propounded by which Indian nationalist leader?

Which event is considered the turning point in Mahatma Gandhi's leadership in the Indian independence movement?

Which African leader is known for his non-violent opposition to colonial rule?