Source: mgmat cat

Everyone who has graduated from TopNotch High School has an intelligence quotient (IQ) of over 120. Most students with an IQ of over 120 and all students with an IQ of over 150 who apply to one or more Ivy League universities are accepted to at least one of them.

The statements above, if true, best support which of the following conclusions?

A: Every graduate of TopNotch High School with an IQ of 150 has been accepted to at least one Ivy-League school.
B: If a person is a high-school graduate and has an IQ of less than 100, he or she could not have been a student at TopNotch High School.
C: If a person has an IQ of 130 and is attending an Ivy-League school, it is possible for him or her to have graduated from TopNotch High School.
D: At least one graduate from TopNotch high school who has applied to at least one Ivy-League university has been accepted to one of them.
E: If a high-school graduate has an IQ of 150 and is not attending an Ivy-League school, then he or she did not apply to one of them.

OA: C

Stimulus mentioned "Ivy League universities" but option mentioned "Ivy-League school." Is it acceptable?

A is incorrect because they would have accepted only if they had applied. It is not mentioned that whether they have applied.
B in incorrect because they might have attended TopNotch High School for very short period but actually they have graduated from some other school.
C is correct because of the word "possible"
D not really. It possible only if If IQ is higher than 150.
E what about E?

Everyone who has graduated from TopNotch High School has an intelligence quotient (IQ) of over 120. Most students with an IQ of over 120 and all students with an IQ of over 150 who apply to one or more Ivy League universities are accepted to at least one of them.

The statements above, if true, best support which of the following conclusions?

E: If a high-school graduate has an IQ of 150 and is not attending an Ivy-League school, then he or she did not apply to one of them.

E is wrong because (i) a high school graduate with an IQ over 150 who did not attend topnotch high shcool may not be accepted into an ivy league school. (ii) difference between accept and attend: you can apply, get accepted, and then choose NOT to attend.

Thanks for the explanation, Rajiv..

akhp, while i agree that we should have been more consistent with both punctuation and the university/school issue, the answer still holds even if the distinction was intended. It is still *possible* for the person to have graduated from TopNotch..

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Tim Sanders
Manhattan GMAT Instructor

Maybe I am wrong. The choice E states that if the person "has an IQ of 150". From the question we know that all students "with IQ's over 150 are attending Ivy schools". If the student has an IQ of 150 , he or she falls into the category of over 120. In that case according to the passage most students over 120 attend Ivy colleges. Hence it is not the best supported answer. It is not absolutely necessary for him/her not to have applied.

Is my line of reasoning wrong?

Rajiv had it right. The passage only talks about acceptance to Ivy League schools, not attendance. Knowing that someone has been accepted to a school is not sufficient to determine that they attended that school.

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Dmitry Farber
Manhattan GMAT Instructor