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Posted: Tue Jul 15, 2008 1:22 pm
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OK, you are confusing me. I have drawn 12 possible ways on a piece of paper. And they're all different. For example, what about: w1, h2, w4, h1, w3, h4, w2, h3? Or: w1, h2, w3, h1, w4, h3, w2, h4?
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Posted: Tue Jul 15, 2008 1:27 pm
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Posted: Tue Jul 15, 2008 3:04 pm
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Posted: Tue Jul 15, 2008 4:16 pm
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If those question marks signify the place where the signs should be put, and if we're supposed to use each sign once, then I'm sure there's no answer to that question.
This time, I wasn't lazy and I tested all the options that can be done if you use each sign once on the places where you put the question marks.
So, I tried: +-*/ +-/* +*-/ +*/- +/-* +/*-
-+*/ -+/* -*+/ -*/+ -/+* -/*+
*+-/ *+/- *-+/ *-/+ */+- */-+
/+-* /+*- /-+* /-*+ /*+- /*-+
I believe that's all. None of them gives you 3. In fact, none of them gives you a whole number. Because there's a division in each one, you always get a fraction. (Don't worry, I had the order of operations in mind.) I thought maybe I can put a minus in front of three after the = for example 5 ? 2 ? 3 ? 5 ? 4 = -3 but there's no question mark on that side of the equals sign. I also thought that I might start by placing a minus in front of the first 5 like -5 ? 2 ? 3 ? 5? 4 =3, but there's no question mark there either. My last idea was that I should omit putting a sign somewhere, like 52+3-54 = 1 but I couldn't get a 3 that way, and you put a question mark in between each two digits. So, I give up. sweatdrop
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Posted: Tue Jul 15, 2008 7:59 pm
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Posted: Wed Jul 16, 2008 11:27 am
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Posted: Wed Jul 16, 2008 11:29 am
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Posted: Wed Jul 16, 2008 12:43 pm
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Posted: Wed Jul 16, 2008 12:50 pm
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Posted: Thu Jul 17, 2008 2:08 pm
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Posted: Thu Jul 17, 2008 2:15 pm
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Posted: Thu Jul 17, 2008 2:32 pm
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Posted: Thu Jul 17, 2008 4:00 pm
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Posted: Thu Jul 17, 2008 4:10 pm
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Posted: Thu Jul 17, 2008 9:20 pm
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