Question
If sin θ and cos θ are the root of standard Quadratic
Equation , then which of the following is true ? 1. a2 + b2 - 2ac = 0 2. b2 - a2 + 2ac = 0 3. a 2 + b 2 + 2ac = 0 4. a 2 - b 2 + 2ac = 0Solution
A 140 m long train crosses another 260 m long train running in the opposite direction in 15 seconds. If the shorter train crosses a pole in 14 seconds, ...
The time taken by train B to cross a platform of 120 metres is 3 sec less than the time taken by train A to cross the same platform. The sum of length o...
A goods train leaves a station at a certain time and at a fixed speed. After 11 hours, an express train leaves the same station and moves in the same di...
A 340 m long train crosses a platform twice its length in 2 min. Find the speed of the train.
Train ‘A’ running with a speed of 63 km/hr can cross a standing goods train of 4 times its length in 24 seconds. Find the time taken by 150 metres l...
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Ratio of the lengths of two trains ‘X’ and ‘Y’ is 5:6 respectively and the ratio of time taken by them to cross a pole is 3:4 respectively. If s...
- If a train takes 30 seconds to pass a tree and 40 seconds to pass a bridge that is 250 meters long, what is the speed of the train?
Two trains of equal lengths take 10 seconds and 15 seconds respectively to cross a telegraph post. If the length of each train be 240 metres, in what ti...
If the ratio of speed of train C and Train D is 5:8 and takes 20 seconds to completely cross each other in same direction. If the ratio of their length ...
