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Published on June 24th, 2012 | by Rahul Vijay Manekari

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Some Microsoft Interview puzzles – Part 1

Why do mirrors reverse right and left instead of up and down? ever imagined? I was going through a book which made me laugh for too long and I thought it would be great to share it with you. “How would you move mount fuji?” by William Poundstone, a book is all about how the world’s smartest companies select the most creative thinkers. This book contains some extraordinary set of interview question and reveals some tricks to Microsoft’s notorious hiring challenges.

So here you go. Try to solve all and comment bellow the answers.

  1.  How would you weigh jet place without using scales?
  2. Why are manhole covers round rather than square?
  3. Why do mirror reverse right and left instead of up and down?
  4. Which way should the key turn in a car door to unlock it?
  5. Why is that, when you turn on hot water in a hotel, the hot water comes out instantly?
  6. How do they make M&Ms?
  7. If you are on a boat and toss a suitcase overboard, will the water level raise or fall?
  8. How many piano tuners are there in the world?
  9. How many gas stations are there in the United States?
  10. How much Mississippi River water flows past New Orleans each hour?
  11. What does all the ice in a hockey rink weigh?
  12. If you could remove any of the fifty U.S. states, which would it be?
  13. How many points are there in the globe where, by walking one mile south, one mile east, and one mile north, you reach the place where you started?
  14. How many times a day do a clock’s hands overlap?
  15. Mike and Todd have $21 between them. Mike has $20 more than Todd. How much does each have? You can’t use factions in the answer.
  16. On the average, how many times would you have to flip open the Manhattan phone book to find a specific name?
  17. How do you cut a rectangular cake into two equal pieces when someone has already removed a rectangular piece from it? The removed piece can be of any size or orientation. You are allowed just one straight cut.
  18. How would you design bill gates’s bathroom?
  19. How would you design a microwave oven controlled by a computer?
  20. How would you design the controls for a VCR?
  21. Design a emote controls for a Venetianblind.
  22. Design a spice rack for a blind person.
  23. How would you test a saltshaker? [A toaster? A teakettle? An elevator?]
  24. how would you locate a specific book in a big library? There’s no cataloging system and no librarian to help you.
  25. Suppose you are hired as an IRS agent. Your first job is to find out whether a nanny agency is cheating on its taxes. How would you do it?
  26. You have eight billiard balls. One of them is “defective”, meaning that it weighs more than the others. How do you tell, using a balance, which ball is defective in two weighing?

Try to solve some of them and comment the answers. It would be fun to know how talented my readers are. :)

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About the Author

A curious techie who like to legwork on various technology gadgets and software. A Software Developer by profession and a blogger by his likeness. IT Graduate, Ex Microsoft Student partner and an official writer at Technorati. Follow Rahul on Google+



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