PT 60 third Game -landscaper

shemori
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PT 60 third Game -landscaper

Postby shemori » Thu Oct 07, 2010 9:38 pm

I had no concrete method on this game. I just wrote out as much possibilities as I could think of. Is there a better way to approach the game?

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ocean
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Re: PT 60 third Game -landscaper

Postby ocean » Thu Oct 07, 2010 9:44 pm

shemori wrote:I had no concrete method on this game. I just wrote out as much possibilities as I could think of. Is there a better way to approach the game?


No, that's exactly the way to do it.

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rso11
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Re: PT 60 third Game -landscaper

Postby rso11 » Thu Oct 07, 2010 9:52 pm

That's what I did to. It sucks.

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incompetentia
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Re: PT 60 third Game -landscaper

Postby incompetentia » Fri Oct 08, 2010 12:07 am

I can see why this game was difficult for people, but you don't have to do just possibilities.

7 periods of time...3 have to be mulch. If we think about this NOT as filling in 7 blanks, but rather 3 digits where we mulch instead of stone, I think it's much easier to think about. It's much easier to think about and refer to a case as "145" rather than MSSMMSS. Note that every case we have is going to be a "5xx" case, that is, 5 will always be mulch.

If we look at inferences we can make about flipping

I. At least two of those datapoints have to be consecutive. Why? If not, you'd have a minimum of 4 switches. Cases like 135 and 257 prove this.

II. If all 3 are consecutive (345, 456, or 567), the case is valid. Why? Maximum of 2 switches.

III. If two are consecutive, but not all three (such as 235, 156, 457), one or both of the separate groups has to include an endpoint (1 or 7). Why? This one is the trickiest, but will help the most. If you think about flipping a switch 3 times, if you start with it on, you will have two periods of it being on, but it'll have to end with it off. MMssMss (125), for example: 3 cleanings, starts with M and ends with S. On the other hand, sMssMMs (256) has 4 cleanings, since M is neither on the beginning or the ending. (There are no cases where BOTH endpoints are taken, but mulch is still on 5.)

Note that with those three principles, we've covered all possible configurations of M already.

Q13.
A fits into category I, so that's definitely FALSE.
B, C, and D fit into category II, so we can't rule in either direction.
E fits into category III, so that's definitely TRUE. You don't even have to look at the other three.

Q14.
D is pretty much the reverse argument of Category I, where we assume:
If 3 Separate -> Not True
Here we have:
True -> Not 3 Separate

Q15.
3rd load mulch means that the case is going to be "35x" - which means that category III is automatically out. (You can't have something consecutive with either 3 or 5, AND have it be either 1 or 7.)
That means category II is the only option, and the only possible way to get 3 consecutive is the 345 case.
Run through the choices, and E is the only answer which fits the 345 case.

Q16
Exactly two cleanings once again rules out category III, in this case because having mulch on 5 always means category III will require 3 cleanings:

Two separate groups of mulch with stone in between only will have 2 cleanings when all 4 stone are in between.
However, you can't have mulch on 5 when there are 4 stone in a row unless they are 1-4. That's the 567 case, which is category II to begin with.

So if we know that the case is either 345, 456, or 567, we know for a fact that A is true in all three cases.

Q17.
Without the possibility of 3 loads consecutively, category II is out. This means we'll have a group of 1 mulch, and a group of 2 mulch.

If you want to calculate all the possibilities for category II, we have 145, 156, 125, and 457. However, 156 and 457 have 3 stone in a row, so those are out.

We're left with 145 and 125 as our cases: this leaves B as the only thing that's not 100% false.

If this makes no sense, lte me know and I'll try to revise what I'm saying. Sometimes I kind of suck at explaining my thinking with LGs...

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gdane
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Re: PT 60 third Game -landscaper

Postby gdane » Fri Oct 08, 2010 12:14 am

This game took me 6 minutes and all I did was plot out all the possibilities. There arent that many. It was much easier than people on here made it out to be. Now the 4th game with the Interns was a little tougher...

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rso11
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Re: PT 60 third Game -landscaper

Postby rso11 » Fri Oct 08, 2010 12:26 am

I actually thought the intern game was easy. Whatever, I guess it just depends.

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LSAT Blog
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Re: PT 60 third Game -landscaper

Postby LSAT Blog » Fri Oct 08, 2010 1:17 am

Here is a complete explanation of the setup and all questions for PT60, G3 (mulch/stones). Explanations for other LGs in that exam are linked within that post.

shemori
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Re: PT 60 third Game -landscaper

Postby shemori » Fri Oct 08, 2010 1:34 am

I didn't think it was extremely difficult just thought there might be a more efficient way to approach...The long explanation above is a little too convolute for me. I would think of contrapositives unless i were doing an in/out game. I've seen the explanation on the LSAT BLOG and it amounts to just writing out the possible outcomes.

Interns Game wasnt too bad for me.

dabbadon8
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Re: PT 60 third Game -landscaper

Postby dabbadon8 » Fri Oct 08, 2010 1:45 am

Wow there were like literally two possibilities for this, a lot of over thinking going on here.

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KevinP
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Re: PT 60 third Game -landscaper

Postby KevinP » Fri Oct 08, 2010 2:01 am

I did the mulch game in about 3-4 minutes. Which was very nice because it gave me the extra time I needed to finish the other games as I stalled on them too long.

As someone above said, the intern game was much harder for me but I generally do 0-1 LG anyway.

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Lasers
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Re: PT 60 third Game -landscaper

Postby Lasers » Fri Oct 08, 2010 2:39 am

i thought this game was easy and the 4th game hard.

in the 4th game, i just couldn't see the big inference. this game really was just about trying stuff out.

Sandro
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Re: PT 60 third Game -landscaper

Postby Sandro » Fri Oct 08, 2010 9:19 am

the 4th game had 1 maybe 2 inferences you HAD to get before you started or it made it a lot harder than it really was (GL block and F/K) I had 5-6 mins left for the game and completely was baffled by the fact that 6 interns had to be either P or Ws... lol

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Dany
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Re: PT 60 third Game -landscaper

Postby Dany » Fri Oct 08, 2010 10:44 am

incompetentia wrote:I can see why this game was difficult for people, but you don't have to do just possibilities.

7 periods of time...3 have to be mulch. If we think about this NOT as filling in 7 blanks, but rather 3 digits where we mulch instead of stone, I think it's much easier to think about. It's much easier to think about and refer to a case as "145" rather than MSSMMSS. Note that every case we have is going to be a "5xx" case, that is, 5 will always be mulch.

If we look at inferences we can make about flipping

I. At least two of those datapoints have to be consecutive. Why? If not, you'd have a minimum of 4 switches. Cases like 135 and 257 prove this.

II. If all 3 are consecutive (345, 456, or 567), the case is valid. Why? Maximum of 2 switches.

III. If two are consecutive, but not all three (such as 235, 156, 457), one or both of the separate groups has to include an endpoint (1 or 7). Why? This one is the trickiest, but will help the most. If you think about flipping a switch 3 times, if you start with it on, you will have two periods of it being on, but it'll have to end with it off. MMssMss (125), for example: 3 cleanings, starts with M and ends with S. On the other hand, sMssMMs (256) has 4 cleanings, since M is neither on the beginning or the ending. (There are no cases where BOTH endpoints are taken, but mulch is still on 5.)

Note that with those three principles, we've covered all possible configurations of M already.

If there's a way to make this game difficult, this is probably it.




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