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Brain Teaser – Determine the code to open the briefcase

Doug had forgotten the 5 digit code to his briefcase. However, he did remember five clues:

  1. The fifth number plus the third number equals fourteen;
  2. The fourth number is one more than the second number;
  3. The first number is one less than twice the second number;
  4. The second number plus the third number equals ten; and
  5. The sum of all five numbers is 30.

What were the five numbers and in what order?

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Posted by Treesha James PE on Jan 23rd, 2010 and filed under Articles, Discussions. You can follow any responses to this entry through the RSS 2.0. You can skip to the end and leave a response. Pinging is currently not allowed.

4 Responses for “Brain Teaser – Determine the code to open the briefcase”

  1. Dustin says:
    January 29, 2010 at 2:26 pm

    7 4 6 5 8

    5 unknowns, 5 equations

    Reply
  2. Heinz Rosen says:
    January 28, 2010 at 6:59 pm

    7,4,6,5,8.
    Elementary Algebra. Actually, even simpler than that.

    Reply
  3. Jose de la Torre says:
    January 25, 2010 at 3:09 pm

    74658

    Reply
  4. Tesh says:
    January 24, 2010 at 9:39 am

    7, 4, 6, 5, 8

    Reply

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