Brain Teasers & Puzzles
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A large water tank has two inlet pipes (a large one and a small one) and one outlet pipe. It takes 3 hours to fill the tank with the large inlet pipe. On the other hand, it takes 6 hours to fill the tank with the small inlet pipe. The outlet pipe allows the full tank to be emptied in 9 hours.
What fraction of the tank (initially empty) will be filled in 0.64 hours if all three pipes are in operation? Give your answer to two decimal places (e.g., 0.25, 0.5, or 0.75).
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A detective visits his friend John just to discover that John’s neighbour Dr Jacob was murdered. Dr Jacob, who is a mathematician wrote the murderer’s name in a code word “Hcqtfz”. There were five suspects
1. Ajit
2. Pankaj
3. Ganpat
4. Deenu
5. HariyaThe Detective was instantly able to find the murderer.
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Bopanna was working on a murder case when he received a message about the location of the murder weapon.
The message was encrypted as below.“deb mitciv eht edisni neddih si nopaew redrum ehT”
Tell me the location of the murder weapon.
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