एक लड़का वर्तमान में अपनी बहन से दोगुनी उम्र का है। तीन वर्ष पहले, वह उससे तीन गुना बड़ा था। उनकी वर्तमान आयु 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?