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Math Brian Teaser I thought of

  1. Jan 15, 2008 #1
    I recently thought of this brain teaser and was thinking that people where would enjoy.

    1/2 - 1/4 = 3
    1/30 - 2/5 = 7
    3/4 - 3/10 = ?


    Enjoy :smile:
     
    Last edited: Jan 15, 2008
  2. jcsd
  3. Jan 15, 2008 #2
    I can think of one pattern, which would give 7/9 as the answer, but 2 examples aren't enough for me to say. I'll try finding something else. And oh, who's Brian?
     
    Last edited: Jan 15, 2008
  4. Jan 15, 2008 #3
    Brian is a horrible speller!

    how about another example:

    4/5 - 5/6 = 32
     
  5. Jan 18, 2008 #4

    dsa

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  6. Jan 18, 2008 #5
    Sorry Diffy, I haven't had much time to look at it. I'll try to solve it by the end of the day.
     
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