by: Reon
6 mins
Events & Promotions
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Difficulty:
55%
(hard)
Question Stats:
62% (01:41) correct
38%
(01:43)
wrong
based on 975
sessions
History
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Time
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Not Attempted Yet
No senator spoke at the convention unless he or she was a Democrat. No Democrat both spoke at the convention and was a senator.
Which one of the following conclusions can be correctly drawn from the statements above?
(A) No one but senators spoke at the convention.
(B) No Democrat spoke at the convention.
(C) Only Democrats spoke at the convention.
(D) No senator spoke at the convention.
(E) Some Democrat senators spoke at the convention.
_________________
Which one of the following conclusions can be correctly drawn from the statements above?
(A) No one but senators spoke at the convention.
(B) No Democrat spoke at the convention.
(C) Only Democrats spoke at the convention.
(D) No senator spoke at the convention.
(E) Some Democrat senators spoke at the convention.
_________________
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Bunuel
Sen speak-demo
X demo-speak & senator
Conclusion?
Conclusion could be no senator actually speak at the convention. Let's look at the options:
(A) No one but senators spoke at the convention. NOT POSSIBLE.
(B) No Democrat spoke at the convention. YES/NO possible. INCORRECT.
(C) Only Democrats spoke at the convention. NOT POSSIBLE.
(D) No senator spoke at the convention. CORRECT! Because speaking senator has to be democrat but also can't be both.
(E) Some Democrat senators spoke at the convention. INCORRECT. introduction of unnecessary possibilities.
There is no intersection between senator who was Democrat and Democrat who spoke at convention. We are told only Senator who was Democrat can spoke. So correct option is D. Option C is incorrect because there is no information about the type of persons spoke at convention. It is possible that except Democrat there can be others who actually spoke at the convention. Options A, B and E are not making any logical sense.
AbhishekP220108
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GMAT Focus 2: 595 Q84 V78 DI77
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Although I got this wrong but after realisation, here is the solution I come up with
Line 1 No senator spoke at the convention unless he or she was a Democrat
If Senator and spoke at convention, then a democrat
Line 2 No Democrat both spoke at the convention and was a senator.
If democrat, then no senator and spoke at the convention
Now evaluate options
(A) No one but senators spoke at the convention.- Too extreme "No one but senator"
(B) No Democrat spoke at the convention.- Incorrect logic, as per argument If democrat, then no senator and spoke at the convention
(C) Only Democrats spoke at the convention.- again "only" too extreme
(D) No senator spoke at the convention.- This logically follows, because we have to take both the statements correct
(E) Some Democrat senators spoke at the convention. if this is correct, then premise will not follow, since no democrat can be both.
Line 1 No senator spoke at the convention unless he or she was a Democrat
If Senator and spoke at convention, then a democrat
Line 2 No Democrat both spoke at the convention and was a senator.
If democrat, then no senator and spoke at the convention
Now evaluate options
(A) No one but senators spoke at the convention.- Too extreme "No one but senator"
(B) No Democrat spoke at the convention.- Incorrect logic, as per argument If democrat, then no senator and spoke at the convention
(C) Only Democrats spoke at the convention.- again "only" too extreme
(D) No senator spoke at the convention.- This logically follows, because we have to take both the statements correct
(E) Some Democrat senators spoke at the convention. if this is correct, then premise will not follow, since no democrat can be both.
Bunuel
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