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# CR

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19 Jun 2003, 09:32
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Having just completed Logic subject, I feel competent to instruct others in the intricacies of this wonderful discipline. Logic is concerned with correct reasoning in the form of syllogisms. A syllogism consists of three statements, two of which are premises, the third of which is the conclusion. Here is an example:

MAJOR PREMISE: The mountain tiger is disappearing.
MINOR PREMISE: This animal is an mountain tiger.
CONCLUSION: Therefore, this animal is disappearing.

Once one has been indoctrinated into the mysteries of this arcane science, there is no statement one may not assert with complete confidence.

The reasoning of the author's example is most similar to that contained in which of the following arguments?

a. Any endangered species must be protected; this species is endangered; therefore, it should be protected.

b. All seals are mammals; this animal is a seal; therefore, this animal is a mammal.

c. Engaging in sexual intercourse with a person to whom one is not married is a sin; and since premarital intercourse is, by definition, without the institution of marriage, it is, therefore, a sin.

d.There are 60 seconds in a minute; there are 60 minutes in an hour; therefore, there are 3600 seconds in an hour.

e.Wealthy people pay most of the taxes; this man is wealthy; therefore, this man pays most of the taxes.

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19 Jun 2003, 23:12
arun wrote:

Having just completed Logic subject, I feel competent to instruct others in the intricacies of this wonderful discipline. Logic is concerned with correct reasoning in the form of syllogisms. A syllogism consists of three statements, two of which are premises, the third of which is the conclusion. Here is an example:

MAJOR PREMISE: The mountain tiger is disappearing.
MINOR PREMISE: This animal is an mountain tiger.
CONCLUSION: Therefore, this animal is disappearing.

Once one has been indoctrinated into the mysteries of this arcane science, there is no statement one may not assert with complete confidence.

The reasoning of the author's example is most similar to that contained in which of the following arguments?

a. Any endangered species must be protected; this species is endangered; therefore, it should be protected.

b. All seals are mammals; this animal is a seal; therefore, this animal is a mammal.

c. Engaging in sexual intercourse with a person to whom one is not married is a sin; and since premarital intercourse is, by definition, without the institution of marriage, it is, therefore, a sin.

d.There are 60 seconds in a minute; there are 60 minutes in an hour; therefore, there are 3600 seconds in an hour.

e.Wealthy people pay most of the taxes; this man is wealthy; therefore, this man pays most of the taxes.

My logic says it's (B).

Normally, on these types of questions I like to assign a variable to each of the statements. For example:

"The mountain tiger is disappearing" = X is Y.
"This animal is a mountain tiger" = Z is X.
"Therefore, this animal is disappearing" = Z is Y.

The statement that follows the patterns of the variables above will be the best answer. It looks like only B does this.

Looking at the choices, D should be thrown out right away, since it's not a syllogism. C isn't either; it's definitional. E is awkward because one man is not going to pay most of the taxes.

Choice A is close, but it only has elements X (endangered species) and Y (the fact that such a species must remain protected). It never introduces a syllogism.

Hope this helps.

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20 Jun 2003, 06:04
arun wrote:

Having just completed Logic subject, I feel competent to instruct others in the intricacies of this wonderful discipline. Logic is concerned with correct reasoning in the form of syllogisms. A syllogism consists of three statements, two of which are premises, the third of which is the conclusion. Here is an example:

MAJOR PREMISE: The mountain tiger is disappearing.
MINOR PREMISE: This animal is an mountain tiger.
CONCLUSION: Therefore, this animal is disappearing.

Once one has been indoctrinated into the mysteries of this arcane science, there is no statement one may not assert with complete confidence.

The reasoning of the author's example is most similar to that contained in which of the following arguments?

a. Any endangered species must be protected; this species is endangered; therefore, it should be protected.

b. All seals are mammals; this animal is a seal; therefore, this animal is a mammal.

c. Engaging in sexual intercourse with a person to whom one is not married is a sin; and since premarital intercourse is, by definition, without the institution of marriage, it is, therefore, a sin.

d.There are 60 seconds in a minute; there are 60 minutes in an hour; therefore, there are 3600 seconds in an hour.

e.Wealthy people pay most of the taxes; this man is wealthy; therefore, this man pays most of the taxes.

I would vote for E.
what is the rigth one?

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21 Jun 2003, 12:08
arun wrote:

Having just completed Logic subject, I feel competent to instruct others in the intricacies of this wonderful discipline. Logic is concerned with correct reasoning in the form of syllogisms. A syllogism consists of three statements, two of which are premises, the third of which is the conclusion. Here is an example:

MAJOR PREMISE: The mountain tiger is disappearing.
MINOR PREMISE: This animal is an mountain tiger.
CONCLUSION: Therefore, this animal is disappearing.

Once one has been indoctrinated into the mysteries of this arcane science, there is no statement one may not assert with complete confidence.

The reasoning of the author's example is most similar to that contained in which of the following arguments?

a. Any endangered species must be protected; this species is endangered; therefore, it should be protected.

b. All seals are mammals; this animal is a seal; therefore, this animal is a mammal.

c. Engaging in sexual intercourse with a person to whom one is not married is a sin; and since premarital intercourse is, by definition, without the institution of marriage, it is, therefore, a sin.

d.There are 60 seconds in a minute; there are 60 minutes in an hour; therefore, there are 3600 seconds in an hour.

e.Wealthy people pay most of the taxes; this man is wealthy; therefore, this man pays most of the taxes.

It is NOT A ( should , instead of must )
It is NOT C ( only two statements )
It is NOT D

SO it's between B & E , and I would go with B

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21 Jun 2003, 22:22
bboroda wrote:
arun wrote:

Having just completed Logic subject, I feel competent to instruct others in the intricacies of this wonderful discipline. Logic is concerned with correct reasoning in the form of syllogisms. A syllogism consists of three statements, two of which are premises, the third of which is the conclusion. Here is an example:

MAJOR PREMISE: The mountain tiger is disappearing.
MINOR PREMISE: This animal is an mountain tiger.
CONCLUSION: Therefore, this animal is disappearing.

Once one has been indoctrinated into the mysteries of this arcane science, there is no statement one may not assert with complete confidence.

The reasoning of the author's example is most similar to that contained in which of the following arguments?

a. Any endangered species must be protected; this species is endangered; therefore, it should be protected.

b. All seals are mammals; this animal is a seal; therefore, this animal is a mammal.

c. Engaging in sexual intercourse with a person to whom one is not married is a sin; and since premarital intercourse is, by definition, without the institution of marriage, it is, therefore, a sin.

d.There are 60 seconds in a minute; there are 60 minutes in an hour; therefore, there are 3600 seconds in an hour.

e.Wealthy people pay most of the taxes; this man is wealthy; therefore, this man pays most of the taxes.

It is NOT A ( should , instead of must )
It is NOT C ( only two statements )
It is NOT D

SO it's between B & E , and I would go with B

Can't get confused with (E). You can't go from "wealthy people" to one wealthy man - this is the logical flaw.

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24 Jun 2003, 00:33
JP wrote:
bboroda wrote:
arun wrote:

Having just completed Logic subject, I feel competent to instruct others in the intricacies of this wonderful discipline. Logic is concerned with correct reasoning in the form of syllogisms. A syllogism consists of three statements, two of which are premises, the third of which is the conclusion. Here is an example:

MAJOR PREMISE: The mountain tiger is disappearing.
MINOR PREMISE: This animal is an mountain tiger.
CONCLUSION: Therefore, this animal is disappearing.

Once one has been indoctrinated into the mysteries of this arcane science, there is no statement one may not assert with complete confidence.

The reasoning of the author's example is most similar to that contained in which of the following arguments?

a. Any endangered species must be protected; this species is endangered; therefore, it should be protected.

b. All seals are mammals; this animal is a seal; therefore, this animal is a mammal.

c. Engaging in sexual intercourse with a person to whom one is not married is a sin; and since premarital intercourse is, by definition, without the institution of marriage, it is, therefore, a sin.

d.There are 60 seconds in a minute; there are 60 minutes in an hour; therefore, there are 3600 seconds in an hour.

e.Wealthy people pay most of the taxes; this man is wealthy; therefore, this man pays most of the taxes.

It is NOT A ( should , instead of must )
It is NOT C ( only two statements )
It is NOT D

SO it's between B & E , and I would go with B

Can't get confused with (E). You can't go from "wealthy people" to one wealthy man - this is the logical flaw.

but you have the same flaw in the premises: you go from tiger as a class (which is disappearing) to only one tiger. Thus E has the closest logic.

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24 Jun 2003, 14:04
Dmitry wrote:
JP wrote:
bboroda wrote:
arun wrote:

Having just completed Logic subject, I feel competent to instruct others in the intricacies of this wonderful discipline. Logic is concerned with correct reasoning in the form of syllogisms. A syllogism consists of three statements, two of which are premises, the third of which is the conclusion. Here is an example:

MAJOR PREMISE: The mountain tiger is disappearing.
MINOR PREMISE: This animal is an mountain tiger.
CONCLUSION: Therefore, this animal is disappearing.

Once one has been indoctrinated into the mysteries of this arcane science, there is no statement one may not assert with complete confidence.

The reasoning of the author's example is most similar to that contained in which of the following arguments?

a. Any endangered species must be protected; this species is endangered; therefore, it should be protected.

b. All seals are mammals; this animal is a seal; therefore, this animal is a mammal.

c. Engaging in sexual intercourse with a person to whom one is not married is a sin; and since premarital intercourse is, by definition, without the institution of marriage, it is, therefore, a sin.

d.There are 60 seconds in a minute; there are 60 minutes in an hour; therefore, there are 3600 seconds in an hour.

e.Wealthy people pay most of the taxes; this man is wealthy; therefore, this man pays most of the taxes.

It is NOT A ( should , instead of must )
It is NOT C ( only two statements )
It is NOT D

SO it's between B & E , and I would go with B

Can't get confused with (E). You can't go from "wealthy people" to one wealthy man - this is the logical flaw.

but you have the same flaw in the premises: you go from tiger as a class (which is disappearing) to only one tiger. Thus E has the closest logic.

I still say (B). If tigers as a class are disappearing, there is a chance that a subset (1 tiger) is disappearing. If "wealthy people" pay "most of the taxes," there is essentially no chance that one man is paying "most of the taxes."

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07 Jul 2003, 01:43
The answer should be E. The first premise refers to tigers as a group. The second refer to one particular tiger. It is flawed because the conclusion attempts to incorporate both meanings. This is the same for answer E.

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24 Sep 2008, 05:41
e for me

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Re: CR   [#permalink] 24 Sep 2008, 05:41
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