Infosys Company Numerical Ability Permutation and Combination

There is an element which triplicates in every hour. Each of these 3 items inturn reproduce exactly 3 other items. If a single compund is kept in a container at noon and the container is full by midnight. After how many hours is the container 1/3 full.

Read Solution (Total 2)

1st hour 3, 2nd hour 3^2, so on total 12 hrs. So in 12 hrs 3^12. 1/3rd of this is clearly 3^11. So ans is 11 hrs
13 years agoHelpfull: Yes(25) No(5)

11hrs

as time between noon and midnight=12 hrs
and container is full after 12 hrs
1 hr before container is 1/3
as each item will generate 3 item and makes container full....
13 years agoHelpfull: Yes(20) No(7)

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