Q. A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water?
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Q. The product of two numbers is 1280 and their H.C.F. is 8. The L.C.M. of the number will be ?
Q. The compound interest on Rs. 30,000 at 7% per annum is Rs. 4347. The period (in years) is:
Q. A train is moving with the speed of 180 km/hr. Its speed (in metres per second) is ?
Q. How many pairs of natural numbers is there the difference of whose squares are 45.
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