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BW2/3 Posted 19 years ago
Grammar

all/only

0All psychiatrists are doctors. Only psychiatrists were invited to the conference. All who were invited to the conference stayed at the Hefford Hote. Therefore, only psychiatrists stayed at the Hefford Hotel.02br
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00　　Which one of the following statements, if added as a premise to the argument, would make the conclusion valid?02br
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00　　(A) Only those who were invited to the conference stayed at the Hefford Hotel.02br
00　　(B) All who were invited to the conference were psychiatrists.02br
00　　(C) All psychiatrists were invited to the conference.02br
00　　(D) No one who was invited to the conference failed to stay at the Hefford Hotel.02br
00　　(E) Only doctors stayed at the Hefford Hotel.02br
02br
00Pick D.02br
02br
00What did you think?02br
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00Thanks0-
  

Top answer

0Hi,02br 02br 00I'd say A. 05002br 02br 00Best wishes, Clive010id1

— Clive

  • 0Hi,02br 02br 00I'd say A.
  • 05002br 02br 00Best wishes, Clive010id1
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22 Answers
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0Hi,02br
02br
00I'd say A. Without that, maybe a plumber, a journalist and a grammarian also stayed at the Hefford Hotel.05002br
02br
00Best wishes, Clive010id1
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0 01font01i00My logic leads me to choice B).02i02font00 0-
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0 Ah, but P - the scenario already tells you (in the second sentence) that all the people at the conference were psychatrists. It tells you that all the delegates at the conference stayed in the hotel, but it doesn't say that the conference delegates were the 01i00only02i00 guests staying in the hotel. Which is why, as Clive says, you need (A) to make the conclusion vali
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0Ah, but P - 00the scenario already tells you (in the second sentence) that all the 01font01del00people02del00 doctors02font00 at the conference were psychatrists. 00 It tells you that all 01font01del00the delegates at02del00 those who were invited to02font
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0 Hi Pioussoul,02br
00 There's something wrong with your reasoning, I think. Here's mine:02br
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00 1.All psychiatrists are doctors. 01font00(This will turn out to be unnecessary information)02font02br
00 2.Only psychiatrists were invited to the conference. 01font00(This doesn
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0 The correct answer is A. Clive has already explained this.02br
02br
00 CJ0-
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1font01i00Thank you, Kooyeen, for enlightening me, but there are a few points of your arguments that I see otherwise, and my opinions are as follows:02i02font02br
02br
01i001.All psychiatrists are doctors. 02i01font01i00(01del00This will turn out to be unnecess
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0I'm not quite sure what your last post was trying to say Pioussoul, but I agree with all the others that A is the only correct answer.02br
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00To prove that only psychiatrists stayed at the hotel (the conclusion) you need to exclude the possibility of anyone else being at the hotel (perhaps it also has holidaymakers staying there). Only A makes that exclusion.02br
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0 Pioussoul,02br
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00 It's very difficult to read all these posts in red and with so much crossed out. I think if you found another way to organize your posts, we could follow what you're saying better.02br
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00(Besides, crossing out someone else's words certainly doesn't show much respect for the effort they took to write them. 05000 )
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0 Shorter posts, guys, please. 02br
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00 We're not here to read novels, we're here to quickly solve problems. 0-
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