A 6 × 6 grid is cut from an 8 × 8 chessboard. In how many ways can we put two identical coins, one on the bl…

A car travels at a speed of 60 km/hr and covers a particular distance in one hour. How long will it take for another car…

Due to the technical snag in the signal system two trains start approaching each other on the same track from two differ…

A train travels at a speed of 30 km/hr for 12 minutes and at a speed of 45 km/hr for the next 8 minutes. The average spe…

A and B travel the same distance at speed of 9 km/hr and 10 km/hr respectively. If A takes 36 min more than B, the dista…

A man covers $$\frac{9}{20}$$ distance by bus and the remaining 10 km on foot. His total journey (in km) is :

A dog start chasing to a cat 2 hour later. It takes 2 hours to dog to catch the cat. If the speed of the dog is 30 km/h.…

A gun is fired from a fort. A man hears the sound 10 seconds later. If the sound travels at the rate of 330 m/sec, find …