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In the Centerville Botanical Gardens, all tulip trees are [#permalink]
22 Feb 2004, 18:14
80% (01:33) correct
20% (00:00) wrong based on 7 sessions
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In the Centerville Botanical Gardens, all tulip trees are older than any maples. A majority, but not all, of the garden's sycamores are older than any of its maples. All the garden's maples are older than any of its dogwoods.
If the statements above are true, which one of the following must also be true of trees in the Centerville Botanical Gardens?
(A) Some dogwoods are as old as the youngest tulip trees.
(B) Some dogwoods are as old as the youngest sycamores.
(C) Some sycamores are not as old as the oldest dogwoods.
(D) Some tulip trees are not as old as the oldest sycamores.
(E) Some sycamores are not as old as the youngest tulip trees.
C cannot be true because it is possible that some sycamores are as old as the oldest dogwoods. This possibility makes the statement wrong.
Agreed that "some sycamores are as old as the oldest dogwoods" is a possibility. But it is just possibility. However, irrespective of whether this is really true or not, I think the choice C, Some sycamores are not as old as the oldest dogwoods. will always be correct. Consider the following expression again.
MOST sycamores > ANY maple > ANY dogwoods
Based on the above expression, if I say that "SOME sycamores are not as old as the oldest dogwoods", what is wrong with that? Afterall, SOME is just the subset of MOST.
Is it just that this choice comes staright forward from the given information in the stem and is therefore not the right answer? That could be possible.
I am nont disputing about the correct answer. The correct answer should be E. I am just trying to understand a point here.
Check out this awesome article about Anderson on Poets Quants, http://poetsandquants.com/2015/01/02/uclas-anderson-school-morphs-into-a-friendly-tech-hub/ . Anderson is a great place! Sorry for the lack of updates recently. I...