Question
1, 4, 13, 36, 97,
? What will come in place of the question mark (?) in the following series?Solution
ATQ, 
Pipe 'A' and pipe 'B', alone can fill a tank in 20 minutes and 30 minutes, respectively. Both the pipes were opened together to fill the tank, but later...
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Pipe βAβ takes 24 hours to fill a tank. Pipe βBβ takes 72 hours to empty the same tank. If both are opened together, how long will it take to fi...
Pipe βAβ and pipe βBβ can fill a cistern in 18 minutes and 16 minutes respectively. Pipe βCβ alone can empty the cistern in 12 minutes. If a...
Two pipes A and B can fill a tank in 24 minutes and 30 minutes respectively, while a third pipe C can empty it in 40 minutes. If all three pipes are ope...
A cistern has two pipes one can fill it with water in 16 hours and other can empty it in 10 hours. In how many hours will the cistern be emptied if both...
Pipe βAβ takes 20 hours to fill a tank. Pipe βBβ takes 80 hours to empty the same tank. If both are opened together, then how long will it take ...
Pipe A alone fill the tank in x hours and Pipe B alone fill the tank in (x β 5) hours. If the efficiency of pipe B is double of pipe A and pipe A fill...
Pipe βXβ and pipe βYβ can fill a tank in 30 hours and 45 hours respectively. Pipe βZβ is 20% more efficient than pipe βXβ. If pipe βYοΏ½...
Pipe βAβ can fill a tank in 45 hours. Pipe βBβ can empty the same tank in 90 hours. If both are opened simultaneously, how long will it take to ...
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