A man travels 50 km at speed 25 km/h and next 40 km at 20 km/h and there after travel 90km at 15 km/h. His average speed is
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∆ABC is right angled at B. If m∠A = 30°., then Sec C =?
In the following question, select the odd word from the given alternatives.
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A train is running at a speed of 116 kms/hr. The distance covered by the train in meters in 18 secs is
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