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Explanation: First-generation computers (1940–1956) used vacuum tubes for circuitry and magnetic drums for memory, making them large and inefficient.
A train can cross a pole in 30 seconds. While if the train increased its speed by 55% then time taken by it to cross 351 metres long platform is 42 seco...
A train takes 5 seconds more to cross a 180-metre-long platform than it takes to cross a pole. If a car running at the speed of 42 m/s takes 80 seconds ...
If a train takes 24 seconds to cross a pole and 36 seconds to cross a 180 metres long bridge, what is the speed of the train?
Two trains of same length are running in parallel tracks in the same direction with speed 26 km/hr and 80 km/hr respectively. The latter completely cros...
Two cars start from a place with a speed of 75 km/hr at an interval of 17 minutes. What is the speed of a man coming from the opposite direction towards...
A train travelling with a speed of 90 km/h can cross a pole in 8 seconds. Find the time taken by the train to cross a 300 metres long platform if the sp...
Train ‘A’ can cross a pole in 10 seconds and a 50 metre long platform in 12 seconds. If the ratio of length of train ‘A’ and train ‘B’ is 2:...
Train B can cross a ‘d’ meter long platform in 16 seconds. The speed of train B is 40% less than the speed of train A. Train A can cross a pole in 8...
Train P travelling at 66 km/hr crosses another train Q, having three fourth of its length and travelling in opposite direction at 42 km/hr in 28 seconds...
Ratio of the lengths of two trains ‘X’ and ‘Y’ is 3:4 respectively and the ratio of time taken by them to cross a pole is 2:3 respectively. If s...
