Question
In the given number 876948549, one is added to all the
even digits and one is subtracted from all the odd digits, then what is the sum of all the digits that are not repeated after the re-arrangement?Solution
8 7 6 9 4 8 5 4 9 9 6 7 8 5 9 4 5 8 Required sum = 6 + 7 + 4 = 17.
1322 metres long train crosses a man who is moving in the same direction with a certain speed, in 40 seconds. If the same train can cross a tree in 20 s...
A motor-cycle covers 100 km with a speed of 40 km/hr. find the speed of the motor-cycle for the next 100 km journey so that the average speed of the who...
Walking at 3/ 4 of his usual speed, a man is 1 1/ 2 hr late. His usual time to cover the same distance (in hours) is?
- Maya has to go to the airport. If she drives at 36 km/h, she arrives 1.5 hours late. If she drives at 60 km/h, she reaches 45 minutes early. What is the di...
The speed of an electric car is 100 km/h, taking 7 hours to traverse a distance. A bus takes 5 hours to cover the same distance. If the electric car's s...
- A truck was moving at 50 km/hr and after ‘x’ hours it increased its speed by 15 km/hr. Then, it continued at the new speed for (x + 4) hours. If the di...
A car is travelling at a constant rate of 42 km/h. The distance travelled by car from 9:40 am to 12:00 pm is:
- Two cyclists, Aman and Raj, start at the same time from the same place and travel to a common destination. If their speeds are in the ratio 7:5 and Raj tak...
A train completes a journey in 5 hrs with a speed of 50 km/hr. At what speed must it travel to complete the journey in 5 hrs?