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National Science Day is celebrated in India on 28 February every year to mark the discovery of the Raman effect by Indian physicist Sir Chandrashekhara Venkata Raman on 28 February 1928.
A person borrows ₹5000 at 12% per annum simple interest. He repays ₹3200 at the end of 2 years. How much does he still owe after 2 years?
What is the total amount spent on Advertising and Training combined?
A pipe can fill a tank in 6 hours, while another pipe can empty it in 8 hours. If both pipes are opened together, how long will it take to fill the tank?
Determine the area of the largest circle that can be inscribed inside a square with a side length of 28 cm? (Use π = 22/7)
'O' is the incentre of △ABC. Given that ∠ABC = 64° and ∠BCA = 96°, determine the measure of ∠BOC.
In 2023, if all teams worked together to complete a project that requires 500 total worker-days, how many days would they take to complete the project?
I. x ² – 10x + 21 = 0
II. y ² – 8y + 15 = 0