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22 Jul 2006, 19:26
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Ellen: All three of Shirley's children have the measles!
Lois: As a matter of fact, all three of Shirley's children are fine!
Accepting the assumption that nobody who has measles is fine, which of the following must be true about this exchange?
A) It is possible that both Ellen and Lois are right about Shirley's children.
B) It is possible that both Ellen and Lois are mistaken about Shirley's children.
C) Either Ellen is right about Shirley's children, or Lois is right about them, but they cannot both be right.
D) Ellen and Lois might both be right about Shirley's children, and they might both be wrong about them.
E) None of these alternatives correctly identifies a possibility for this scenario.
please explain
Lois: As a matter of fact, all three of Shirley's children are fine!
Accepting the assumption that nobody who has measles is fine, which of the following must be true about this exchange?
A) It is possible that both Ellen and Lois are right about Shirley's children.
B) It is possible that both Ellen and Lois are mistaken about Shirley's children.
C) Either Ellen is right about Shirley's children, or Lois is right about them, but they cannot both be right.
D) Ellen and Lois might both be right about Shirley's children, and they might both be wrong about them.
E) None of these alternatives correctly identifies a possibility for this scenario.
please explain
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22 Jul 2006, 20:06
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this was tough. I chose C in the end.
B also came close but the word "possible" put me off, suggesting that there is a possibility that both could be right which violates our assumption which is that having measles is not fine.
B also came close but the word "possible" put me off, suggesting that there is a possibility that both could be right which violates our assumption which is that having measles is not fine.
22 Jul 2006, 20:13
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Ellen: All three of Shirley's children have the measles!
Lois: As a matter of fact, all three of Shirley's children are fine!
Accepting the assumption that nobody who has measles is fine, which of the following must be true about this exchange?
A) It is possible that both Ellen and Lois are right about Shirley's children.
Both can't be right at the same time as long as they are talking abt the same Shirley..
B) It is possible that both Ellen and Lois are mistaken about Shirley's children.
This is possiblem when one kid has measles and other two don't.
C) Either Ellen is right about Shirley's children, or Lois is right about them, but they cannot both be right.
No need that one of them has to be right..
D) Ellen and Lois might both be right about Shirley's children, and they might both be wrong about them.
Both can't be right..
E) None of these alternatives correctly identifies a possibility for this scenario.
B is somewhat making sense.. But ideally I would like to say - both can't be right, but both or either can be wrong.
I am choosing B over E.
Lois: As a matter of fact, all three of Shirley's children are fine!
Accepting the assumption that nobody who has measles is fine, which of the following must be true about this exchange?
A) It is possible that both Ellen and Lois are right about Shirley's children.
Both can't be right at the same time as long as they are talking abt the same Shirley..
B) It is possible that both Ellen and Lois are mistaken about Shirley's children.
This is possiblem when one kid has measles and other two don't.
C) Either Ellen is right about Shirley's children, or Lois is right about them, but they cannot both be right.
No need that one of them has to be right..
D) Ellen and Lois might both be right about Shirley's children, and they might both be wrong about them.
Both can't be right..
E) None of these alternatives correctly identifies a possibility for this scenario.
B is somewhat making sense.. But ideally I would like to say - both can't be right, but both or either can be wrong.
I am choosing B over E.
