The speed of a fast moving electron, having total energy of 2 MeV, is nearly:
The correct answer is D
A and B can do job in 6 days. B and C can do same job in 12 days. A, B and C together can do same job in 4 days. In how many days A and C together can c...
10 persons begin to work together on a job, but after some days, 4 persons leave. As a result, the job, which could have been completed in 40 days, was ...
A certain number of men can finish a piece of work in 40 days. If there were 4 men less, it would take 4 days more for the same work to be finished. How...
