Both A and B together can complete a work in 20 days and B alone can complete the same work in 36 days. In how many days will A alone complete the work?
A body has a weight W on the surface of Earth. What is its weight on a planet whose mass is 15 times that of Earth and a radius that is 4 times that of the earth?
A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series. -7.25, -5.75, -4.25, -2.75, ? , 0.25