Really a tricky Inference question...

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Sharks have a higher ratio of cartilage mass to body mass than any other organism. They also have a greater resistance to cancer than any other organism. Shark cartilage contains a substance that inhibits tumor growth by stopping the development of a new blood network. In the past 20 years, none of the responses among terminal cancer patients to various therapeutic measures has been more positive than the response among those who consumed shark cartilage.

If the claims made above are true, then each of the following could be true EXCEPT:

(A) No organism resists cancer better than sharks do, but some resist cancer as well as sharks.

(B) The organism most susceptible to cancer has a higher percentage of cartilage than some organisms that are less susceptible to cancer.

(C) The substance in shark cartilage that inhibits tumor growth is found in most organisms.

(D) In the past 20 years many terminal cancer patients have improved dramatically following many sorts of therapy.

(E) Some organisms have immune systems more efficient than a shark's immune system.


Could not even Imagine what Official GMAT Test could ask in an inference question... The OA is A

After reading the 5 options, I found none of the 5 options to be true to infer something from the stimulus. Every answer choice has inferred something that is not given completely in the passage.

But answer choice A is most different especially the second part of the option. I think that the answer choice A is more different and hence in the Inference X question, it is the correct answer...

Guyzzz see this question and please give your explanations. I have got this question set which is a 700 level one and all the questions are from the official...
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by dhonu121 » Tue May 22, 2012 8:22 am
[email protected] wrote:Sharks have a higher ratio of cartilage mass to body mass than any other organism. They also have a greater resistance to cancer than any other organism. Shark cartilage contains a substance that inhibits tumor growth by stopping the development of a new blood network. In the past 20 years, none of the responses among terminal cancer patients to various therapeutic measures has been more positive than the response among those who consumed shark cartilage.

If the claims made above are true, then each of the following could be true EXCEPT:

(A) No organism resists cancer better than sharks do, but some resist cancer as well as sharks.

(B) The organism most susceptible to cancer has a higher percentage of cartilage than some organisms that are less susceptible to cancer.

(C) The substance in shark cartilage that inhibits tumor growth is found in most organisms.

(D) In the past 20 years many terminal cancer patients have improved dramatically following many sorts of therapy.

(E) Some organisms have immune systems more efficient than a shark's immune system.


Could not even Imagine what Official GMAT Test could ask in an inference question... The OA is A

After reading the 5 options, I found none of the 5 options to be true to infer something from the stimulus. Every answer choice has inferred something that is not given completely in the passage.

But answer choice A is most different especially the second part of the option. I think that the answer choice A is more different and hence in the Inference X question, it is the correct answer...

Guyzzz see this question and please give your explanations. I have got this question set which is a 700 level one and all the questions are from the official...
Hi Amit,
Firstly, I would like to know the source from where you got this awesome question bank you talking about.I also want one :)

Now coming to option A,
It just rephrases what is stated in a passage but in a different way.
They also have a greater resistance to cancer than any other organism.
This can also be written as Resistance(Shark) > Resistace(Any other organism.)
or Res(No organism) > Res(Shark.)
This is what the first part of A says.
A logical extension of my second bold statement above could be Resistance(Some Organism)= Resistance(Shark)..And that is what Second part of A says.

Hope I am clear.
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by [email protected] » Tue May 22, 2012 8:57 am
Answer choice E can also be the answer... I really do not understand why is E wrong as E cannot be inferred based on what is given in the stimulus...
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by dhonu121 » Tue May 22, 2012 9:25 am
[email protected] wrote:Answer choice E can also be the answer... I really do not understand why is E wrong as E cannot be inferred based on what is given in the stimulus...
Inference questions are not about what CAN be true..Its about what IS true..
Surely E CAN be true..but looking at the stimulus it ISN'T.
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by GmatKiss » Tue May 22, 2012 1:04 pm
IMO: A

It is extreme, out of all the choices and hence can be considered false.

It is the best among the worse, i would say :D

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by Bill@VeritasPrep » Tue May 22, 2012 2:11 pm
dhonu121 wrote:
[email protected] wrote:Answer choice E can also be the answer... I really do not understand why is E wrong as E cannot be inferred based on what is given in the stimulus...
Inference questions are not about what CAN be true..Its about what IS true..
Surely E CAN be true..but looking at the stimulus it ISN'T.
That is the key distinction here.

"Which of the following is true?"--we're looking for the one answer that is guaranteed to be true.

"Each of the following could be true EXCEPT:"--four answers that are possibly true, one answer is guaranteed to be NOT true.

It's almost like an anti-inference.
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by chris@magoosh » Tue May 22, 2012 2:30 pm
Hmmm.... I have to agree: I don't think that this question is too difficult. We are simply restating information already stated in the passage: the shark is more resistant to cancer than is any other organism.

We are looking for an answer that cannot be true. (A) says that there are other organisms that have an equal amount of resistance to cancer as sharks. This clearly goes what is stated in the passage.