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Brain teaser – Make this equation true, 999999999999999 = 1990

Insert +, -, x or / in suitable places on the left side of = so as to make the equation true:

999999999999999 = 1990

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Posted by Ken.Kabaki on Aug 20th, 2009 and filed under 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 – Make this equation true, 999999999999999 = 1990”

  1. theju says:
    January 19, 2012 at 3:00 am

    999+999-9+(9999/9999)

    Reply
  2. nirav says:
    November 29, 2011 at 4:06 am

    999+999-9+(9/9)+999-999=1990

    Reply
  3. ciphur says:
    November 9, 2009 at 9:44 pm

    (9999/9)-(999/9)+(999-9)+(9-9)

    Brackets don’t matter

    Reply

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