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Senior Manager
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Diagramatic explanation please [#permalink]
 27 Feb 2004, 08:59
I need diagramatic (ven diagram) explanation for this, please.
All actors are exuberant people and all exuberant people are extroverts, but nevertheless it is true that some shy people are actors.
If the statements above are true, each of the following must also be true EXCEPT:
(A) Some shy people are extroverts.
(B) Some shy extroverts are not actors.
(C) Some exuberant people who are actors are shy.
(D) All people who are not extroverts are not actors.
(E) Some extroverts are shy.
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Director
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I would go with B
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SVP
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I believe D it is
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Director
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I will go with B.
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SVP
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You folks, watch the word EXCEPT in the stem.
B is true. So it cannot be the answer. Some shy people are actors means the remaining shy people may be just extroverts(& not actors) or exuberants(& not actors) or totally something else.
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Director
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Hi anand I was about to ask whether you noted the except. D is
All people who are not extroverts are not actors.
Doesn't this mean those who lie outside your outer circle are not actors. which is true if we go with your diagram.
But the stimuli has
but nevertheless it is true that some shy people are actors. we don't have any other information about the shy people. So, should be B.
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SVP
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I agree it is B.
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Senior Manager
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Sorry folks, somehow I was not getting the notification for this thread.
The official answer is B.
But I wonder how we can say that on the basis of a diagram?
Anand,
You did a FANTASTIC job at putting the diagram. I think that the BIGGEST CIRCLE that represnt the SHY PEOPLE, should also intersect the ACTOR circle. Because, we were given in that - "but nevertheless it is true that some shy people are actors. "
Do you agree?
NOW, if Anand agrees, than I would like to know under what circumstances, B can be FALSE? We always have some portion of any one of the three circles representing the SHY PEOPLE that say that they are not actors. correct?
Please respond. This should be understood by all of us.
Thanks
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CEO
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Anand, can you help gmatblast here?
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SVP
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hi gmatblast,
I agree that bigger ellipse (or circle ) should also intersect with ACTOR circle. if you modify B as shy actors are extraverts then B will be TRUE. Or if you modify B such that the set it includes fall inside any of the circles.
B is not true as it is because we dont have any information about shy people other thant the fact that some of them are ACTORS.
Anand.
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