समय पर पैसे न लौटने पर रामी चाची को दादी माँ ने क्या कहा
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two trains 150 meters and 125 meters in length are running towards each other on parallel tracks,one at the rate of 44 km/hr and the other at 46 km/hr in what time (seconds) will they be clear of each other from the moment they meet ?
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