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 Post subject: pt56, S1, G2 questions 7-11 Four people help move exactly 3
 Post Posted: Sun Nov 22, 2009 3:43 pm 
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Vinny Gambini
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Can someone please walk me through the setup of this game. Not sure why but I literally froze when I was taking this as a PT! I had trouble diagramming the rules as well...

Also if you can think of any similar games I would love to work on them!


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 Post subject: Re: pt56, S1, G2 questions 7-11 Four people help move exactly 3
 Post Posted: Mon Nov 23, 2009 7:58 pm 
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Thanks for your question. I am attaching my set-up. Let me know what you think and whether you need help working through any of the questions! As with many closed assignment games, I did not see many inferences - do you see any?


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 Post subject: Re: pt56, S1, G2 questions 7-11 Four people help move exactly 3
 Post Posted: Wed Dec 09, 2009 1:09 pm 
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And here's a full solution that Matt wrote up (attached).


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 Post subject: Re: pt56, S1, G2 questions 7-11 Four people help move exactly 3
 Post Posted: Thu Jun 03, 2010 2:41 pm 
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Vinny Gambini
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Hi, I also had a problem with this game, and I think it came down to interpreting the 1st conditional clue incorrectly, as I i was unable to infer that it was a biconditional. I feel like I need further clarification on the whole "if BUT only if" phrase.
Why is this not the same as "only if"? And for that matter, would the phrase "if AND only if" be a biconditional as well? thanks in advance for the reply.


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 Post subject: Re: pt56, S1, G2 questions 7-11 Four people help move exactly 3
 Post Posted: Thu Jun 03, 2010 5:17 pm 
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"If and only if" and "If but only if" are both bi-conditionals. Consider them as statements that you can break into two parts:

Tom is accepted if and only if he writes a song

1. Tom is accepted if he writes a song. AND
2. Tom is accepted only if he writes a song.

"Only if" sets up the necessary side of a conditional statement.

Does that clear it up?


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 Post subject: Re: pt56, S1, G2 questions 7-11 Four people help move exactly 3
 Post Posted: Mon Sep 20, 2010 8:40 am 
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Vinny Gambini
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Hi there:

Thanks for the diagrams and answers. I set this up as an open assignment game with the people (G, H, J, M) as the base. I got all answers right but it took me 9 minutes to complete, as opposed to less than 6 when, after consulting the forum, I set this up as a closed assignment game with the pieces of furniture (r, s, t) as the base.

I remember wondering how to set this up when I was taking the PT and I thought that it would be easier to write down the "uncertainty" (how many pieces does each person move?) as opposed to the "certainty" (each piece of furniture is moved by two people). I thought the "certainty" would be easier to juggle in my mind, off paper.

Any advice for determining which variable to use as the base in ASSIGNMENT games? I know that for ordering games, the variable with the most logical "order" should be used, but how about in games like this?

Thanks!


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 Post subject: Re: Diagram
 Post Posted: Fri May 27, 2011 4:00 pm 
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Jackie Chiles
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Quick question on this -how do you write the contrapositive of a biconditional..is it the same as writing it for a conditional?


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 Post subject: Re: Diagram
 Post Posted: Fri May 27, 2011 4:32 pm 
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Jackie Chiles
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The posted walkthrough is incredible! It pretty much answered all my Qs


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 Post subject: Re: Diagram
 Post Posted: Wed Jun 01, 2011 2:34 pm 
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megm7267 wrote:
Quick question on this -how do you write the contrapositive of a biconditional..is it the same as writing it for a conditional?

Glad you liked Matt's write-up.

As for this question, yes, it'd be the same.

T < -- > ~ M can be considered T --> ~ M and ~ M --> T, so then take the contrapositive of each of those.

Or, get fancy, and negate each side of the double-arrowed statement, and you get ~ T < --> M.


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