Question
Which OLAP operation allows users to view data at
different levels of granularity?Solution
Drill-down increases detail (year → month), roll-up summarizes (month → year).
A train covers a certain distance at a speed of 36 km/h and the next same distance with a speed of 45 km/h and the next same distance with a speed of 60...
A bus travels from point ‘X’ to ‘Y’ at a constant speed. If its speed was increased by 15 km/h, it would have taken 2 hours less to cover the di...
A Boy plants a bomb at a place in Diwali and starts running at 30 m/s. After 54 seconds the bomb was blast. In how much time the sound of blast will be ...
- A person at a railway station hears the sound of an explosion 3.6 km away, after 40 seconds. What is the speed of sound in this situation?
A man starts chasing a biker who is 600 metres ahead. The man runs at 5 m/s while the biker rides at 3 m/s. How much time will the man take to catch him?
Excluding the Stoppages i.e. Non-stop, the speed of a Bullet train is 810 km/h and including the stoppages, it is 720 km/h. calculate for how many minut...
Ratio of speeds of ‘A’ and ‘B’ is 6:11, respectively. If they participate in a 220-metre race and ‘B’ gives ‘A’, a head start of ‘m’...
The speed ratio of Y : Z is 3 : 2. After increasing his speed by 50%, Y covers 270 km in 3 hours. How much time will Z take to cover 200 km?
A person travelled a distance of 200 km in 7 hours. He travelled partly on a car at the speed of 50 kmph and partly on cycle at 20 kmph. What is the dis...
- In a race of 300 metres, 'P' defeats 'R' by 45 metres, and 'R' defeats 'Q' by 30 metres. Find out how many metres 'P' defeats 'Q' by.
