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Author Topic: How do I set up this question  (Read 595 times)

divencenzo

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How do I set up this question
« on: February 01, 2011, 07:20:09 PM »
With so many options how is this question set up? Lsat 51 section 4 question 22 or 21?

EarlCat

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Re: How do I set up this question
« Reply #1 on: February 01, 2011, 11:17:52 PM »
I set these up with what I call rubber bands.  Rubber bands are lines connecting things in a sequential manner, but they remain flexible regarding how far apart they are.

So a clue like "G comes before K" would look like:

G---K

G is attached to K with a rubber band, so G could be near K or far from K, but will never switch sides with K.  So if I had the elements G H I J K and M, and that were my only clue, then I can do anything I want as long as I can stretch G and K into place.

M I H G J K    G I M K J H    G M H I J K     M I G K J H
      G---K    G-----K        G---------K         G-K


...and so on. 

Adding other clues restricts my possibilities.

"M is before G"

M----G----K


"H is after G"

M----G----K
      \
       \--H


Notice here that we don't have a rule defining H's relationship to K.  Their order can change depending on how far we stretch our rubber bands.

H may be before K:

I M G J H K
  M-G-----K
     \
      \-H



or H may be after K:

M G J K I H
M-G---K
   \
    \-----H


It's left up to us to figure out the possibilities within the constraints of the questions.
Try making a rubber band diagram of the rules in this game and see if it helps.