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An association between organisms of two different species in which one is inhibited or destroyed and the other is unaffected is called ammensalism.
The ratio between the speeds of train J and K is 7:5 respectively. Train J which is (a+140) metre long can cross a pole in 24 seconds. If train K can cr...
A train has to cover a distance of 112 km in 14 hours. If it covers half journey in 3/5th time, then the speed of covering the remaining dist...
Two trains of equal lengths take 20 seconds and 30 seconds respectively to cross a telegraph post. If the length of each train be 300 metres, in what ti...
A train can cross a pole, a bridge of 340 meter long and platform of 320 meter long in 12 seconds, _____ seconds and 28 seconds, respectively.
Th...
A train can cross a pole in 18 seconds. While if the train increased its speed by 75% then time taken by it to cross 444 metres long platform is 42 seco...
A train started from station P and preceded towards station Q at a speed of 90 km/h. 54 minutes later, another train started from station Q and preceded...
Two trains 190 metres and 160 metres in length are running towards each other on parallel tracks, one at the rate 70 km/hr and another at 56 km/hr. In h...
A train 450 metre long takes 30 sec to cross a man running at a speed of 6 km/hr in the direction same to that of train. What is the speed of the train?
A goods train leaves a station at a certain time and at a fixed speed. After 8 hours, an express train leaves the same station and moves in the same dir...
A train 420 metre long takes 21 sec to cross a man running at a speed of 3 km/hr in the direction same to that of train. What is the speed of the train?
