For the following questions answer them individually
A and can completea task in 12 days. However, A had to leave a few days before the
task was completed and hence it took 16 daysin all to complete the task. If A alone could complete the work in 21 days, how many days before the work getting over did A leave?
Which of the following sportspersons recently wrote the autobiographical book ‘Ace Against Odds’?
Pipes A, B and C are attached to an empty cistern. While the first two can fill the cistern in 4 and 10 hours,respectively, the third can drain the cistern, when filled, in 6 hours. If all the three pipes are opened simultaneously when the cistern is three-fifth full, how many hours will be needed to fill the cistern?
The difference between the place values of ‘4’ and ‘2’ in the number 833749502 is: