Question

There are infinite pipes attached to a very big tank. Pipes are numbered like P1,P2,P3………… and so on. Its also known that efficiency of every subsequent pipe is half the efficiency of earlier pipe, i.e., efficiency of P2 pipe is half the efficiency of P1 pipe and so on. However, in case of P1 pipe, this rule is not true since there is no earlier pipe. When all the pipes are working together, the tank gets filled in 2 hours.​

Answer 1

Answer:

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