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Director
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Only if the electorate is moral and intelligent will a [#permalink]
 06 Jun 2005, 12:26
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4. Only if the electorate is moral and intelligent will a democracy function well.
Which one of the following can be logically inferred from the claim above?
(A) If the electorate is moral and intelligent, then a democracy will function well.
(B) Either a democracy does not function well or else the electorate is not moral or not intelligent.
(C) If the electorate is not moral or not intelligent, then a democracy will not function well.
(D) If a democracy does not function well, then the electorate is not moral or not intelligent.
(E) It cannot, at the same time, be true that the electorate is moral and intelligent and that a democracy will not function well.
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GMAT Club Legend
Joined: 07 Jul 2004
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If A then B, If not B then not A.
If moral&intellgient then function well.
If not function well, then !(moral&intelligent)
Which one of the following can be logically inferred from the claim above?
(A) If the electorate is moral and intelligent, then a democracy will function well.
(B) Either a democracy does not function well or else the electorate is not moral or not intelligent.
- out.
(C) If the electorate is not moral or not intelligent, then a democracy will not function well.
- not supported for
(D) If a democracy does not function well, then the electorate is not moral or not intelligent.
- out. If democracy does not function well, then the electorate is not moral AND not intelligent.
(E) It cannot, at the same time, be true that the electorate is moral and intelligent and that a democracy will not function well.
- not supported for
A is best.
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Manager
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ywilfred wrote: If A then B, If not B then not A.
If moral&intellgient then function well.
If not function well, then !(moral&intelligent)
Which one of the following can be logically inferred from the claim above?
(A) If the electorate is moral and intelligent, then a democracy will function well.
(B) Either a democracy does not function well or else the electorate is not moral or not intelligent.
- out.
(C) If the electorate is not moral or not intelligent, then a democracy will not function well.
- not supported for
(D) If a democracy does not function well, then the electorate is not moral or not intelligent.
- out. If democracy does not function well, then the electorate is not moral AND not intelligent.
(E) It cannot, at the same time, be true that the electorate is moral and intelligent and that a democracy will not function well.
- not supported for
A is best.
Only if the electorate is moral and intelligent will a democracy function well.
if democracy does not function well , then electorate is either not intelligent or is not moral or both
So "D" must be the answer
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GMAT Club Legend
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shalinikhatri wrote: ywilfred wrote: If A then B, If not B then not A.
If moral&intellgient then function well.
If not function well, then !(moral&intelligent)
Which one of the following can be logically inferred from the claim above?
(A) If the electorate is moral and intelligent, then a democracy will function well.
(B) Either a democracy does not function well or else the electorate is not moral or not intelligent.
- out.
(C) If the electorate is not moral or not intelligent, then a democracy will not function well.
- not supported for
(D) If a democracy does not function well, then the electorate is not moral or not intelligent.
- out. If democracy does not function well, then the electorate is not moral AND not intelligent.
(E) It cannot, at the same time, be true that the electorate is moral and intelligent and that a democracy will not function well.
- not supported for
A is best. Only if the electorate is moral and intelligent will a democracy function well. if democracy does not function well , then electorate is either not intelligent or is not moral or both So "D" must be the answer D states that it's either not intelligent or not moral, and not both. We need both to be not intelligent and not moral.
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Director
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I agree with D
!(A&B) = not A or not B
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GMAT Club Legend
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Vithal wrote: I agree with D
!(A&B) = not A or not B
Yes, D should be the answer. I overlooked that point. From a digital electronics point of view, the boolean algebra should work out to:
!(A x B) = !A + !B 
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SVP
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C)...only if x and y then z = if not x and y then not z !
D) is out because only if x and y then z = or <> if not z then not y and x OR not a and b OR not w and c
_________________
If your mind can conceive it and your heart can believe it, have faith that you can achieve it.
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Senior Manager
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WinWinMBA wrote: 4. Only if the electorate is moral and intelligent will a democracy function well.
Which one of the following can be logically inferred from the claim above?
(A) If the electorate is moral and intelligent, then a democracy will function well.
(B) Either a democracy does not function well or else the electorate is not moral or not intelligent.
(C) If the electorate is not moral or not intelligent, then a democracy will not function well.
(D) If a democracy does not function well, then the electorate is not moral or not intelligent.
(E) It cannot, at the same time, be true that the electorate is moral and intelligent and that a democracy will not function well.
I pick C
the statement says that a democracy will only function well if the electorate is moral and intelligent...thus if an electorate is not moral and intelligent, a democracy won't function well
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Director
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The OA is C.
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