Question
Which database model represents data in a tree-like
structure, where each child record has only one parent?Solution
Hierarchical Model
‘A’ and ‘B’ started moving towards each other at same time with a speed of 8 km/hr and 10 km/hr, respectively. If the dis...
A car rental service charges ₹500 for the first 100 kilometers and ₹8 for each additional kilometer. If a customer drives 150 kilometers in a day an...
Person 'A' begins a journey from Punjab to Delhi, driving initially at 120 km/hr. Every 36 minutes, he reduces his driving speed by 5 km/hr. If the dist...
The speed of a train is 36 km/hr and it takes 12 seconds to cross a man. Find the time taken by train to cross a platform if the ratio of the length of ...
A train was initially moving at 60 km/hr, then increased its speed by 15 km/hr after ‘z’ hours and continued for (z + 8) hours more. If the distance...
Ajay and Vishal left the place ‘X’ with different speeds which are in the ratio 9:5 respectively. Ajay left the place 36 seconds after Vishal. If af...
'A’ and ‘B’ started moving towards each other at same time with a speed of 8 km/hr and 10 km/hr, respectively. If the distance covered by ‘A’ ...
Ramesh covered one-fourth of the total journey at 30 km/h and the rest at 45 km/h. If he took a total of 8 hours to complete the journey, how much dista...
Train A is 180 meters long, while another Train B is 240 meter long. Train A has a speed of 30 kmph and Train B’s speed is 40 kmph, if the trains ...
Bipasha and Malika leave the towns Kolkata and Ambala at 6:00 AM and travel toward Ambala and Kolkata respectively. Bipasha is 60 kilometers per hour an...
