Comments on: Technical Interview Questions http://www.neosprockets.com/index.php/2009/07/technical-interviews-questions/ .. the next generation of engineers and tech professionals .. Sat, 04 Feb 2012 11:47:02 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Derek http://www.neosprockets.com/index.php/2009/07/technical-interviews-questions/comment-page-1/#comment-46 Derek Sat, 15 Aug 2009 00:31:20 +0000 http://www.neosprockets.com/?p=587#comment-46 Well, if we're going that far outside the box... :) - You could PAINT the blue marbles RED. - You could poke out the eyes of the person administering the test. They'd be unable to determine which colored marble they pulled. - Destroy the jars so the test can't be executed. Well, if we’re going that far outside the box… :)

- You could PAINT the blue marbles RED.
- You could poke out the eyes of the person administering the test. They’d be unable to determine which colored marble they pulled.
- Destroy the jars so the test can’t be executed.

]]> By: Nathan Saichek http://www.neosprockets.com/index.php/2009/07/technical-interviews-questions/comment-page-1/#comment-45 Nathan Saichek Sat, 15 Aug 2009 00:18:48 +0000 http://www.neosprockets.com/?p=587#comment-45 Ooh! just thought of another way to solve that one. You could put all the blue marbles in an oven for an hour or two before hand, so that when the person drawing the marbles grabs a blue one, they burn their hand, so they can only draw red ones. Ooh! just thought of another way to solve that one. You could put all the blue marbles in an oven for an hour or two before hand, so that when the person drawing the marbles grabs a blue one, they burn their hand, so they can only draw red ones.

]]> By: Nathan Saichek http://www.neosprockets.com/index.php/2009/07/technical-interviews-questions/comment-page-1/#comment-44 Nathan Saichek Sat, 15 Aug 2009 00:15:22 +0000 http://www.neosprockets.com/?p=587#comment-44 I like this one: You have two jars, 50 red marbles and 50 blue marbles. A jar will be picked at random, and then a marble will be picked from the jar. Placing all of the marbles in the jars, how can you maximize the chances of a red marble being picked? What are the exact odds of getting a red marble using your scheme? My answer would be: first, put 25 blue marbles in jar 1, then put 25 blue marbles in jar 2. Then put 25 red marbles in jar 1, and 25 in jar 2. The odds of drawing a blue marble from these normal jars, with normal sized marbles, with normal human hands are effectively zero. All the blue marbles are at the bottom. The red marbles, on top, are certainly going to be drawn. I like this one:

You have two jars, 50 red marbles and 50 blue marbles. A jar will be picked at random, and then a marble will be picked from the jar. Placing all of the marbles in the jars, how can you maximize the chances of a red marble being picked? What are the exact odds of getting a red marble using your scheme?

My answer would be: first, put 25 blue marbles in jar 1, then put 25 blue marbles in jar 2.
Then put 25 red marbles in jar 1, and 25 in jar 2.

The odds of drawing a blue marble from these normal jars, with normal sized marbles, with normal human hands are effectively zero. All the blue marbles are at the bottom. The red marbles, on top, are certainly going to be drawn.

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