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Vasily: My cat enjoys going outside if it is not raining and if the la

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Vasily: My cat enjoys going outside if it is not raining and if the la  [#permalink]

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New post 18 Jan 2014, 02:00
4
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A
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Difficulty:

  55% (hard)

Question Stats:

64% (01:46) correct 36% (01:45) wrong based on 614 sessions

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Vasily: My cat enjoys going outside if it is not raining and if the large feral tabby cat that lives in the alley is nowhere nearby. If it is raining, my cat does not enjoy going outside, save in one circumstance: if the white Siamese cat who lives across the street is around, my cat does enjoy going outside regardless.

Which of the following do the statements above most adequately support?


A. If the Siamese cat is outside, Vasily’s cat will ignore the large feral tabby.

B. If the large feral tabby is nearby, Vasily’s cat will not enjoy going outside.

C. If it is raining and Vasily’s cat is enjoying itself, then the large feral tabby must be nowhere nearby.

D. If Vasily’s cat is enjoying going outside and the large feral tabby is nowhere nearby, then either it is not raining or the white Siamese is around.

E. If Vasily’s cat does not enjoy going outside, then either the large feral tabby is nearby or it is not raining.
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Re: Vasily: My cat enjoys going outside if it is not raining and if the la  [#permalink]

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New post 27 Jan 2014, 11:22
1
FACT 1......Vasily's cat enjoys going outside if it is not raining and if the large feral tabby cat that lives in the alley is nowhere nearby.
FACT 2.......If it is raining, the cat does not enjoy going outside, save in one circumstance: if the white Siamese cat who lives across the street is around, my cat does enjoy going outside regardless.


D) If Vasily’s cat is enjoying going outside and the large feral tabby is nowhere nearby, then either it is not raining or the white Siamese is around....clear correct answer

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Re: Vasily: My cat enjoys going outside if it is not raining and if the la  [#permalink]

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New post 28 Jan 2014, 03:51
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aditya111

B)If the large feral tabby is nearby, Vasily’s cat will not enjoy going outside.,....see the Fact 1......" My cat enjoys going outside if it is not raining and if the large feral tabby cat that lives in the alley is nowhere nearby".[/color]

the fact may not be true in reverse also...........ie if my cat enjoys going outside when the large tabby is not around....that does not mean....If the large feral tabby is nearby, Vasily’s cat will not enjoy going outside. in any case------The vasily's cat enjoys going outside if it is not raining...........so what if the large tabby is there............




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Re: Vasily: My cat enjoys going outside if it is not raining and if the la  [#permalink]

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New post 03 May 2015, 17:51
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Quote:
D IS BEST.
OTHER ANSWER CHOICES ARE IRRELEVANT


No they are not. Post more helpful posts if you can

Back to the topic
No rain + No feral = Cat enjoys
Rain = Cat does not enjoy
Rain + Siamese = Cat enjoys

The information is almost like a flow chart. Depending on certain circumstances (ran, feral, Siamese) we can arrive at two different conclusions (cat enjoys, cat does not enjoy).

The correct conclusion will be something that is strongly supported by this 'flow chart.'

(A) -- we don't have a relationship between "Feral" and "Siamese" in our flow. Incorrect.
(B) -- there are TWO requirements for "not enjoy": "no rain" AND "no feral"; this tells us nothing about the rain
(C) -- "enjoying itself" does not necessarily mean "outside." Incorrect.
(D) -- YES! This is directly supported by the "flow."
(E) -- "don't not enjoy" would mean it IS raining AND the feral IS outside. Note the use of "and" in the question stem.

The correct answer is (D).
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Re: Vasily: My cat enjoys going outside if it is not raining and if the la  [#permalink]

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New post 04 Jan 2016, 04:00
o GMAT!
GMAT is driving her students over the hills.
The gruesomeness of GMAT is not the gmat exam itself. It is having to not know when prep centres, in their free goodies", give you off scope questions that might not affect your IMPROVEMENT in the GMAC exam.
Sad!
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Re: Vasily: My cat enjoys going outside if it is not raining and if the la  [#permalink]

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New post 24 Jul 2016, 06:11
1
My 2 cents here:

Vasily: My cat enjoys going outside if it is not raining and if the large feral tabby cat that lives in the alley is nowhere nearby. If it is raining, my cat does not enjoy going outside, save in one circumstance: if the white Siamese cat who lives across the street is around, my cat does enjoy going outside regardless.

First of all, take a look at the first sentence:

My cat enjoys going outside if it is not raining and if the large feral tabby cat that lives in the alley is nowhere nearby.

Any condition can be either necessary, sufficient or both. What type of condition do we see here?
It is clearly a necessary condition - to enjoy going outside we need "not raining" and "no ferral tabby cat". Note that these conditions are not sufficient - in order to enjoy going outside you may need more than just absense of rain and ferral tabby cat. For example, the cat might need proper air temperature, humidity, good health condition, etc. Note that due to the nature of sufficient conditions (i.e. they tend to be very complicated for almost any real life situations) they are rarely used on GMAT.

Going back to the argument, we can wright the following logic formula for the first sentence:

enjoyable walk -> no rain AND no cat

, where "->" means implication: If we have enjoyable walk, there is no rain and no ferral cat. Note that the direction of this arrow is crucial as it seems that in the OE Veritas puts it in reverse.

Now, recall how we apply negation to logic formulas:

A -> B after negation becomes not A <- not B
A AND B after negation becomes not A OR not B
not A after negation becomes A

Using these rules, let's negate our formula

enjoyable walk -> no rain AND no cat

after negation becomes

not enjoyable walk <- rain OR cat

which litteraly reads as "If there is either rain or cat, there is no enjoyable walk".
It is clear that the answer B fits this formula due to "or" condition:

If the large feral tabby is nearby, Vasily’s cat will not enjoy going outside.

It is enough to have a feral tabby cat around to spoil going outside.
Note that OA is D and is also correct.
Therefore, if I haven't missed anything, this question looks malformed and should not be used for practice.

Hope this helps. Any feedback and comments are welcome.
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Re: Vasily: My cat enjoys going outside if it is not raining and if the la  [#permalink]

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New post 24 Dec 2017, 23:03
imsahlahno wrote:
I chose B as the answer... can somebody please explain why D is the answer... thanks


B is not correct. The reason. We know that Vasily's cat won't go out because the large feral tabby is outside. But what if the Siamese is around ? and what if it stops raining. There D is better.
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Re: Vasily: My cat enjoys going outside if it is not raining and if the la  [#permalink]

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New post 31 May 2018, 04:48
guerrero25 wrote:
Vasily: My cat enjoys going outside if it is not raining and if the large feral tabby cat that lives in the alley is nowhere nearby. If it is raining, my cat does not enjoy going outside, save in one circumstance: if the white Siamese cat who lives across the street is around, my cat does enjoy going outside regardless.

Which of the following do the statements above most adequately support?


A. If the Siamese cat is outside, Vasily’s cat will ignore the large feral tabby.

B. If the large feral tabby is nearby, Vasily’s cat will not enjoy going outside.

C. If it is raining and Vasily’s cat is enjoying itself, then the large feral tabby must be nowhere nearby.

D. If Vasily’s cat is enjoying going outside and the large feral tabby is nowhere nearby, then either it is not raining or the white Siamese is around.

E. If Vasily’s cat does not enjoy going outside, then either the large feral tabby is nearby or it is not raining.



VERITAS PREP OFFICIAL SOLUTION:



Solution: D

Arrange the premises in conditional form: If the tabby is absent AND either the white Siamese is around OR it isn’t raining, Vasily’s cat enjoys going outside. (We could express this as ~T & (S or ~R) => E.) This means that for Vasily’s cat to enjoy going outside, we need 1) the tabby is be somewhere else and 2) the white Siamese OR a lack of rain. While the difficulty in the question lies in thus simplifying the statements, once you do so the correct answer is clear: (D).
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Re: Vasily: My cat enjoys going outside if it is not raining and if the la &nbs [#permalink] 31 May 2018, 04:48
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