For the following questions answer them individually
1000 solid spherical balls each of radius 0.6 cm are melted and recast into a single spherical ball. What is the surface area (in cm$$^2$$) of ball so formed?
The average of a few numbers is 48. If 75% of the numbers are increased by 4 each and the rest are decreased by 6 each, then what is the average of the numbers, so obtained?
The Table given below presents the figures of the production (in thousands) of different types of vehicles by a company during the years 2013-2018.
The total production of all types of vehicles in 2018 is what percent more than the total production of all types of vehicles in 2015?
A person buys a certain number of oranges at ₹84 a dozen and two times of it at ₹72 a dozen. He sells all the oranges at ₹90 a dozen and makes a profit of ₹1680. How many oranges does he buy?