‘Mentor India’ Compaign is an initiative to engage leaders who can guide and mentor students at ‘Atal Tinkering Labs’ across the country. Who launched‘Mentor India’ Campaign?
The simple interest on a certain sum of money invested at a certain rate for 2 years amounts to Rs. 1200. The compound interest on the same sum of money invested at the same rate of interest for 2 years amounts to Rs. 1290. What was the principal?