A. √18

B. 324

C. 18

D. (324)²

E. √314

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At what approximate time between 4 and 5 am will the hands o f a clock be at right angle?

A man’s speed with the current is 15 km/hr and the speed of the current is 2.5kmph, the man’s Speed against the current is

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A train crosses a platform 100 m long in 60 sec at a speed of 45 km/hr. the time taken by the train by the train to cross an electric pole is: