If the sex ratio in a population is significantly different from 50:50, then which of the following will always be true? 

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#Question id: 7539

#General Aptitude

A person standing on a platform of length 300 meters observed that a train takes 15 seconds to pass him, passed completely through the platform in 40 seconds. Them the length of the train (in meters) is

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#Question id: 7540

#General Aptitude

Two trains of lengths 200m and 320m pass each other with constant speeds on parallel tracks in opposite directions. The drivers and guards are at extremities of the trains. The time gap between the drives passing each other and first driver-guard pair passing each other is 25 s. How much later will other driver-guard pair pass by?

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#Question id: 7541

#General Aptitude

A train travelling at 54km/hr completely crosses another train having half its length and travelling in opposite direction in 18km/hr in 30 second. It also passes a railway platform in 40 seconds. The length of the platform (in meters) is

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#Question id: 7542

#General Aptitude

Two trains travel in opposite directions at 55km/hr and 53km/hr and a man sitting in slower train passes the faster train in 5.5 second. The length of the faster train (in meters) is

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#Question id: 7543

#General Aptitude

Two train whose lengths 180m and 220m respectively are running in opposite direction with respective speeds of 40km/hr and 50km/hr. Time taken by them to cross one another will be (in seconds)

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#Question id: 7544

#General Aptitude

In what time (in second) will a train 140 meters long cross an electric pole, is its speed in 126km/hr?