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Marvin s behavior at the party last night is fascinating in

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New post 24 Dec 2014, 16:51
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New post 09 Jul 2015, 19:37
Also doesn't option B can be implied to say that Marwin did Spill the punchbowl in places that were hidden, while he was drinking it(insome obscure or hidden place).
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New post 18 Sep 2015, 06:55
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Marvin’s behavior at the party last night is fascinating in [#permalink]

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New post 18 Sep 2015, 12:40
I do not think option B is the correct answer, because there are in fact two assumptions:

1. If marvin drank the bowl, there would have been some spillage.
2. The examiner's ability

B only removes the doubt produced by #2, but #1 remains. If there is no guarantee for spillage, then #2 is moot. #2 only comes into play after #1 can be safely concluded.

I think E provides a better alternative for why Marvin did not drink the bowl.

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New post 14 Oct 2017, 13:37
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Re: Marvin s behavior at the party last night is fascinating in [#permalink]

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New post 18 Oct 2017, 23:03
VeritasPrepKarishma wrote:
Sukant2010 wrote:
Marvin’s behavior at the party last night is fascinating in that there is no evidence that he drank the entire container of punch despite the fact that he was the only person known to have been by the punchbowl between the time it was filled and the time it was observed to be empty. If Marvin had drunk the entire bowl, then some of the punch would inevitably have spilled on the tile, but I examined the tile carefully and found no evidence of spilled punch. Thus Marvin must not have drunk the entire punchbowl.

Which of the following, if true, most strengthens the argument?

A. Most large drinks that have been imbibed at parties result in significant spillage.

B. The person examining the tile for evidence of spilled punch has been able to detect such evidence in considerably more obscure, hidden places.

C. Marvin’s behavior at the party was observed for the first time by the examiner.

D. Many of the other telltale signs of a punchbowl’s being consumed were found.

E. At certain raucous parties like the party in question, some punchbowls are merely thrown out the window as part of a prank.


Let's analyze the argument.

Premises (assumed to be true):
- There is no evidence that Marvin drank the entire container of punch.
- He was the only person known to have been by the punch bowl between the time it was filled and the time it was observed to be empty. (Mind you, the premise doesn't say that he WAS the only person. It only says that he was the only person KNOWN to have been by the bowl. If someone else did go to the bowl, it is not known)
- If Marvin had drunk the entire bowl, then some of the punch would have spilled on the tile. (Taken to be a fact. If he had drunk the whole bowl, some punch would have spilled)
- I examined the tile carefully and found no evidence of spilled punch. (I examined and found no spillage is given. This doesn't mean there was no spillage. The point is that I found none)

Conclusion: Marvin must not have drunk the entire punch bowl.

There is one way in which we can prove beyond doubt that Marvin did not drink the entire punch bowl - if we can prove that there was certainly no spillage. 'I found no spillage' doesn't mean there was none. But if I am good at detecting spillage, it strengthens the conclusion that Marvin must not have drunk the entire punch bowl. It increases the probability that there is actually no spillage and hence the probability that Marvin did not drink the entire punch. Hence (B) is correct.

(E) At certain raucous parties like the party in question, some punchbowls are merely thrown out the window as part of a prank.
Option (E) provides an explanation of what could have happened to the punch (might have been thrown out - one of many possibilities) in case Marvin did not drink all of it. It doesn't strengthen the conclusion that Marvin did not drink the entire punch.




Hi
I'm really sorry, but I have a silly question

If Marvin had drunk the entire bowl, then some of the punch would have spilled on the tile. (Taken to be a fact. If he had drunk the whole bowl, some punch would have spilled)

what is the realtion between drinking all the punch and spilling it?

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Re: Marvin s behavior at the party last night is fascinating in   [#permalink] 18 Oct 2017, 23:03

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