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LSAT Question

Danielle
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3/24/2011 11:30:25 AM
Posted: 5 years ago
This is a real question from a practice LSAT book. I'm sure it would be very easy to look up the answer online, but just for fun I was wondering if anybody could solve this on their own. I thought it was very tricky, and though I got it wrong, I want to dispute the book's answer lol. But before I do that, I need to see if this is really tricky or if I'm just a dumba$s, so here we go...

1. Houses that have dogs get fleas.

2. People who live in houses with fleas get fleas themselves.

3. If a person does not live with fleas, then he or she does not have a cat.

Which of the following makes it logical to claim that Bill has fleas?

(A) Bill has a cat.
(B) Bill has a dog.
(C) Bill lives in an apartment with fleas.
(D) Bill does not have fleas himself.
(E) Bill's brother, who lives in a house, has fleas.

I'm going to give a hint and say the book uses "lawyer logic."
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mattrodstrom
Posts: 12,028
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3/24/2011 11:33:52 AM
Posted: 5 years ago
1. Houses that have dogs get fleas.

2. People who live in houses with fleas get fleas themselves.

3. If a person does not live with fleas, then he or she does not have a cat.

Which of the following makes it logical to claim that Bill has fleas?

These two ought to be equally good:

(B) Bill has a dog.
(C) Bill lives in an apartment with fleas.

But if I HAD TO choose... I'd guess B

I'm going to give a hint and say the book uses "lawyer logic."
"He who does not know how to put his will into things at least puts a meaning into them: that is, he believes there is a will in them already."

Metaphysics:
"The science.. which deals with the fundamental errors of mankind - but as if they were the fundamental truths."
mattrodstrom
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3/24/2011 11:34:41 AM
Posted: 5 years ago
No... no.

If he has a cat..

he has fleas
"He who does not know how to put his will into things at least puts a meaning into them: that is, he believes there is a will in them already."

Metaphysics:
"The science.. which deals with the fundamental errors of mankind - but as if they were the fundamental truths."
mattrodstrom
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3/24/2011 11:35:26 AM
Posted: 5 years ago
so, A
"He who does not know how to put his will into things at least puts a meaning into them: that is, he believes there is a will in them already."

Metaphysics:
"The science.. which deals with the fundamental errors of mankind - but as if they were the fundamental truths."
Danielle
Posts: 21,330
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3/24/2011 11:35:40 AM
Posted: 5 years ago
Thanks matt. I'm going to wait for a few more responses just to have multiple people's opinion before providing the book's answer/explanation.
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mattrodstrom
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3/24/2011 11:39:51 AM
Posted: 5 years ago
Take it back... it could be a cat is just an extraneous Necessary (but not sufficient) condition for fleas to happen.. (that's what I initially thought... but re-thought it bad)

I'd still bet on B or C

prolly C

b/c they might have a dog outside..

and Apartment is closer to a house than an unspecified Dog-keeping zone.
"He who does not know how to put his will into things at least puts a meaning into them: that is, he believes there is a will in them already."

Metaphysics:
"The science.. which deals with the fundamental errors of mankind - but as if they were the fundamental truths."
mattrodstrom
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3/24/2011 11:44:38 AM
Posted: 5 years ago
At 3/24/2011 11:33:52 AM, mattrodstrom wrote:
1. Houses that have dogs get fleas.

2. People who live in houses with fleas get fleas themselves.

3. If a person does not live with fleas, then he or she does not have a cat.

in real life #3 would be more than enough to make it so that if you have a cat.. Then you have fleas..

but in random proposition world.. it may be the case that you Only have a cat if you also have a dog in your home.

so.. I would stick away from the Having a Cat answer
"He who does not know how to put his will into things at least puts a meaning into them: that is, he believes there is a will in them already."

Metaphysics:
"The science.. which deals with the fundamental errors of mankind - but as if they were the fundamental truths."
mattrodstrom
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3/24/2011 11:47:24 AM
Posted: 5 years ago
I can see why you don't much like this question.
"He who does not know how to put his will into things at least puts a meaning into them: that is, he believes there is a will in them already."

Metaphysics:
"The science.. which deals with the fundamental errors of mankind - but as if they were the fundamental truths."
askbob
Posts: 7,254
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3/24/2011 11:47:43 AM
Posted: 5 years ago
At 3/24/2011 11:30:25 AM, Danielle wrote:
This is a real question from a practice LSAT book. I'm sure it would be very easy to look up the answer online, but just for fun I was wondering if anybody could solve this on their own. I thought it was very tricky, and though I got it wrong, I want to dispute the book's answer lol. But before I do that, I need to see if this is really tricky or if I'm just a dumba$s, so here we go...

1. Houses that have dogs get fleas.

2. People who live in houses with fleas get fleas themselves.

3. If a person does not live with fleas, then he or she does not have a cat.

Which of the following makes it logical to claim that Bill has fleas?

(A) Bill has a cat.
(B) Bill has a dog.
(C) Bill lives in an apartment with fleas.
(D) Bill does not have fleas himself.
(E) Bill's brother, who lives in a house, has fleas.

I'm going to give a hint and say the book uses "lawyer logic."

C is the correct answer or at least i think
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askbob
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3/24/2011 11:50:29 AM
Posted: 5 years ago
Actually, A is the correct answer, C is wrong due to the apartment vs. house crap
Me -Phil left the site in my charge. I have a recorded phone conversation to prove it.
kohai -If you're the owner, then do something useful like ip block him and get us away from juggle and on a dofferent host!
Me -haha you apparently don't know my history
Kohai - Maybe not, but that doesn't matter! You shoukd still listen to your community and quit being a tyrrant!
Me - i was being completely sarcastic
Kohai - then u misrepresented yourself by impersonating the owner—a violation of the tos
mattrodstrom
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3/24/2011 11:54:23 AM
Posted: 5 years ago
At 3/24/2011 11:50:29 AM, askbob wrote:
Actually, A is the correct answer

proposition 4: if a person has a dog, they necessarily have a cat
Proposition 5: a person can Only have a cat if they have a dog.

these are Possibilities which would make answer A dead wrong...

but, yeah... I suppose it may be the "best" answer... I think it's a sucky question.
"He who does not know how to put his will into things at least puts a meaning into them: that is, he believes there is a will in them already."

Metaphysics:
"The science.. which deals with the fundamental errors of mankind - but as if they were the fundamental truths."
Ore_Ele
Posts: 25,980
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3/24/2011 11:54:44 AM
Posted: 5 years ago
At 3/24/2011 11:30:25 AM, Danielle wrote:
This is a real question from a practice LSAT book. I'm sure it would be very easy to look up the answer online, but just for fun I was wondering if anybody could solve this on their own. I thought it was very tricky, and though I got it wrong, I want to dispute the book's answer lol. But before I do that, I need to see if this is really tricky or if I'm just a dumba$s, so here we go...

1. Houses that have dogs get fleas.

2. People who live in houses with fleas get fleas themselves.

3. If a person does not live with fleas, then he or she does not have a cat.

Which of the following makes it logical to claim that Bill has fleas?

I'm assuming we are weighing each option independently, and that Bill is a person.


(A) Bill has a cat.

If Bill has a cat, then we can logically claim that bill has fleas, since it is not possible to not have fleas and not have a cat. However, that is dependent upon us assuming "having" = "living with." If we don't make that assumption, than we cannot make this logical conclusion.

(B) Bill has a dog.

No, since this option does not tell us if Bill lives in a house with his dog. We would have to make that assumption for it to logically follow.

(C) Bill lives in an apartment with fleas.

This depends if appartment = house or not. They are both residences, and in all real world purposes, the same. But since you said "lawyer logic" (not really sure what that is), one could argue that they are different, and so appartments to not apply to #2

(D) Bill does not have fleas himself.

Does not fit with what we are trying to prove (logical claim that bill has fleas)

(E) Bill's brother, who lives in a house, has fleas.

No rules were stated that fleas pass from one person to another, so no reason to believe that the fleas would go from his brother to him.
"Wanting Red Rhino Pill to have gender"
LaissezFaire
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3/24/2011 11:56:37 AM
Posted: 5 years ago
A. Easy.
Should we subsidize education?
http://www.debate.org...

http://mises.org...

http://lewrockwell.com...

http://antiwar.com...

: At 6/22/2011 6:57:23 PM, el-badgero wrote:
: i didn't like [Obama]. he was the only black dude in moneygall yet he claimed to be home. obvious liar is obvious liar. i bet him and bin laden are bumfvcking right now.
Ore_Ele
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3/24/2011 11:57:28 AM
Posted: 5 years ago
I read the question differently, not "Bill has fleas, so what is the most logical cause" but "which of these will logically cause Bill to have fleas." Which means there could be more than 1 answer, or none at all.
"Wanting Red Rhino Pill to have gender"
LaissezFaire
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3/24/2011 11:59:24 AM
Posted: 5 years ago
At 3/24/2011 11:56:37 AM, LaissezFaire wrote:
A. Easy.

Unless live =\= have, as ore said. But that'd be stupid.
Should we subsidize education?
http://www.debate.org...

http://mises.org...

http://lewrockwell.com...

http://antiwar.com...

: At 6/22/2011 6:57:23 PM, el-badgero wrote:
: i didn't like [Obama]. he was the only black dude in moneygall yet he claimed to be home. obvious liar is obvious liar. i bet him and bin laden are bumfvcking right now.
LaissezFaire
Posts: 2,050
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3/24/2011 12:01:40 PM
Posted: 5 years ago
At 3/24/2011 11:59:24 AM, LaissezFaire wrote:
At 3/24/2011 11:56:37 AM, LaissezFaire wrote:
A. Easy.

Unless live =\= have, as ore said. But that'd be stupid.

But since house=apartment would make both b and c right, I'm sticking with a.
Should we subsidize education?
http://www.debate.org...

http://mises.org...

http://lewrockwell.com...

http://antiwar.com...

: At 6/22/2011 6:57:23 PM, el-badgero wrote:
: i didn't like [Obama]. he was the only black dude in moneygall yet he claimed to be home. obvious liar is obvious liar. i bet him and bin laden are bumfvcking right now.
mattrodstrom
Posts: 12,028
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3/24/2011 12:01:56 PM
Posted: 5 years ago
At 3/24/2011 11:54:44 AM, OreEle wrote:
(A) Bill has a cat.

If Bill has a cat, then we can logically claim that bill has fleas, since it is not possible to not have fleas and not have a cat.

There are other "logical" possibilities:
one might Only have a cat if you have a dog...
and Bill might have a dog, and a cat, and live in an apartment.. and Not have fleas.

saying any particular answer is "logical" is a bad move...

You NEED to make a jump to come to an answer.
"He who does not know how to put his will into things at least puts a meaning into them: that is, he believes there is a will in them already."

Metaphysics:
"The science.. which deals with the fundamental errors of mankind - but as if they were the fundamental truths."
Vi_Veri
Posts: 4,487
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3/24/2011 12:02:27 PM
Posted: 5 years ago
1. Houses that have dogs get fleas.

2. People who live in houses with fleas get fleas themselves.

3. If a person does not live with fleas, then he or she does not have a cat.

If A, then B.

If B then B.

If not B, then not C.

------------------------------

Just putting it into symbolic, though I can't answer the question because I've already done the LSAT test booklet that has this question :p
I could give a f about no haters as long as my ishes love me.
mattrodstrom
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3/24/2011 12:04:11 PM
Posted: 5 years ago
At 3/24/2011 12:01:56 PM, mattrodstrom wrote:
and Bill might have a dog, and a cat, and live in an apartment.. and Not have fleas.

oops.. nope
"He who does not know how to put his will into things at least puts a meaning into them: that is, he believes there is a will in them already."

Metaphysics:
"The science.. which deals with the fundamental errors of mankind - but as if they were the fundamental truths."
Vi_Veri
Posts: 4,487
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3/24/2011 12:04:30 PM
Posted: 5 years ago
At 3/24/2011 12:02:27 PM, Vi_Veri wrote:
1. Houses that have dogs get fleas.

2. People who live in houses with fleas get fleas themselves.

3. If a person does not live with fleas, then he or she does not have a cat.


If A, then B.

If B then C.

If not B, then not D.



------------------------------

Just putting it into symbolic, though I can't answer the question because I've already done the LSAT test booklet that has this question :p

Correction
I could give a f about no haters as long as my ishes love me.
mattrodstrom
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3/24/2011 12:05:45 PM
Posted: 5 years ago
At 3/24/2011 12:04:11 PM, mattrodstrom wrote:
At 3/24/2011 12:01:56 PM, mattrodstrom wrote:
and Bill might have a dog, and a cat, and live in an apartment.. and Not have fleas.

oops.. nope

A's the answer :(
"He who does not know how to put his will into things at least puts a meaning into them: that is, he believes there is a will in them already."

Metaphysics:
"The science.. which deals with the fundamental errors of mankind - but as if they were the fundamental truths."
LaissezFaire
Posts: 2,050
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3/24/2011 12:06:14 PM
Posted: 5 years ago
At 3/24/2011 12:01:40 PM, LaissezFaire wrote:
At 3/24/2011 11:59:24 AM, LaissezFaire wrote:
At 3/24/2011 11:56:37 AM, LaissezFaire wrote:
A. Easy.

Unless live =\= have, as ore said. But that'd be stupid.

But since house=apartment would make both b and c right, I'm sticking with a.

Actually nvm, I'm still not sure.
Should we subsidize education?
http://www.debate.org...

http://mises.org...

http://lewrockwell.com...

http://antiwar.com...

: At 6/22/2011 6:57:23 PM, el-badgero wrote:
: i didn't like [Obama]. he was the only black dude in moneygall yet he claimed to be home. obvious liar is obvious liar. i bet him and bin laden are bumfvcking right now.
Vi_Veri
Posts: 4,487
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3/24/2011 12:09:11 PM
Posted: 5 years ago
Remember, in reality, you only have about a minute, maybe less, to answer this question on the LSAT :p
I could give a f about no haters as long as my ishes love me.
mattrodstrom
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3/24/2011 12:10:26 PM
Posted: 5 years ago
bogusness!
"He who does not know how to put his will into things at least puts a meaning into them: that is, he believes there is a will in them already."

Metaphysics:
"The science.. which deals with the fundamental errors of mankind - but as if they were the fundamental truths."
Vi_Veri
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3/24/2011 12:11:24 PM
Posted: 5 years ago
You have 35 minutes for 25 questions. (for just a section) If you divide your time evenly, you have a minute and ten seconds on each question.
I could give a f about no haters as long as my ishes love me.
mattrodstrom
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3/24/2011 12:12:08 PM
Posted: 5 years ago
At 3/24/2011 12:09:11 PM, Vi_Veri wrote:
Remember, in reality, you'll just skip such a question you find so confounding

yeah.. I know.
"He who does not know how to put his will into things at least puts a meaning into them: that is, he believes there is a will in them already."

Metaphysics:
"The science.. which deals with the fundamental errors of mankind - but as if they were the fundamental truths."
Ore_Ele
Posts: 25,980
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3/24/2011 12:13:18 PM
Posted: 5 years ago
If Bill has a cat, then from #3, we know that Bill will be living with fleas. If we assume that "living with" = "having" then we know that if Bill has a cat, Bill has fleas. So A would logically fit (given the assumption).

With C, we would have to assume that "appartment" = "house," which would allow C to fit logically (given that assumption).

None of them appear to hold without some kind of assumption, but I believe that A makes the smallest assumption.
"Wanting Red Rhino Pill to have gender"
Ore_Ele
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3/24/2011 12:14:37 PM
Posted: 5 years ago
At 3/24/2011 12:11:24 PM, Vi_Veri wrote:
You have 35 minutes for 25 questions. (for just a section) If you divide your time evenly, you have a minute and ten seconds on each question.

Though no one really spends 1 minute and 10 seconds on each question, you get through each one as fast as you can, to maximize your time with the hardest ones. So that for any particular hard one, you may have 4 or 5 minutes.
"Wanting Red Rhino Pill to have gender"
Vi_Veri
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3/24/2011 12:16:14 PM
Posted: 5 years ago
At 3/24/2011 12:12:08 PM, mattrodstrom wrote:
At 3/24/2011 12:09:11 PM, Vi_Veri wrote:
Remember, in reality, you'll just skip such a question you find so confounding

yeah.. I know.

The good thing is you don't need to respond correctly to every question to attain a "perfect" score of 180. In fact, you can get 2 or 3 wrong.

Unfortunately though, if you get 75% of the LSAT questions correct, you will score higher than 90% of all test takers. It's a really damn hard test.

If you get 50% of the LSAT questions correct, you will score higher than 40% of all test takers.
I could give a f about no haters as long as my ishes love me.
Vi_Veri
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3/24/2011 12:16:56 PM
Posted: 5 years ago
At 3/24/2011 12:14:37 PM, OreEle wrote:
At 3/24/2011 12:11:24 PM, Vi_Veri wrote:
You have 35 minutes for 25 questions. (for just a section) If you divide your time evenly, you have a minute and ten seconds on each question.

Though no one really spends 1 minute and 10 seconds on each question, you get through each one as fast as you can, to maximize your time with the hardest ones. So that for any particular hard one, you may have 4 or 5 minutes.

Well yeah - but this one was one of the easier ones lol
I could give a f about no haters as long as my ishes love me.