• Magoosh
Study with Magoosh GMAT prep

Available with Beat the GMAT members only code

• Award-winning private GMAT tutoring
Register now and save up to $200 Available with Beat the GMAT members only code • Get 300+ Practice Questions 25 Video lessons and 6 Webinars for FREE Available with Beat the GMAT members only code • 5 Day FREE Trial Study Smarter, Not Harder Available with Beat the GMAT members only code • 5-Day Free Trial 5-day free, full-access trial TTP Quant Available with Beat the GMAT members only code • Free Practice Test & Review How would you score if you took the GMAT Available with Beat the GMAT members only code • Free Trial & Practice Exam BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Reach higher with Artificial Intelligence. Guaranteed Now free for 30 days Available with Beat the GMAT members only code • Free Veritas GMAT Class Experience Lesson 1 Live Free Available with Beat the GMAT members only code • 1 Hour Free BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code ## Any medical test will sometimes fail to detect a condition tagged by: RBBmba@2014 This topic has 10 expert replies and 9 member replies Goto page • 1, • 2 RBBmba@2014 Legendary Member Joined 30 May 2012 Posted: 889 messages Followed by: 4 members Upvotes: 8 #### Any medical test will sometimes fail to detect a condition Fri Jun 12, 2015 2:57 am Any medical test will sometimes fail to detect a condition when it is present and indicate that there is one when it is not. (A) a condition when it is present and indicate that there is one (B) when a condition is present and indicate that there is one (C) a condition when it is present and indicate that it is present (D) when a condition is present and indicate its presence (E) the presence of a condition when it is there and indicate its presence OA: C @ Experts - could you please share your explanation and analysis for this SC. It's an OG Qs.Sort of lost here... Much thanks in advance. RBBmba@2014 Legendary Member Joined 30 May 2012 Posted: 889 messages Followed by: 4 members Upvotes: 8 Fri Jun 19, 2015 4:40 am DavidG@VeritasPrep wrote: Quote: Can you please provide a few Official questions in which ONE refers to DIFFERENT ENTITY & questions in which ONE refers to SAME ENTITY ? That's a very specific request. Coincidentally, I was just working through the following sentence with a student: "Constructed at least as early as the Sui dynasty (A.D. 581-618), the Altar of Heaven, the oldest known altar used in Chinese state religious practice, is more than 1,000 years older than a similar ONE in Beijing and is the only altar found so far that predates the Qing dynasty (A.D. 1644-1912)." @ Dave - Thanks for your feedback. BUT in the SC you mentioned above, ONE has not been used as a STANDALONE rather preceded by SIMILAR. So eventually, it(re use of SIMILAR before ONE) makes clear that ONE refers to SAME ENTITY here. So, determining the FUCTION or USAGE of ONE in this sentence is much straightforward, I think. How we could determine the same when ONE is STANDALONE and we're to understand it from the MEANING/CONTEXT ? Hence, I'd like to know whether you could shed light on my BOTH the above questions with OFFICIAL INSTANCES in which ONE refers to 1) SAME ENTITY and 2) DIFFERENT ENTITY ? Look forward to hear from you! ### GMAT/MBA Expert DavidG@VeritasPrep Legendary Member Joined 14 Jan 2015 Posted: 2667 messages Followed by: 120 members Upvotes: 1153 GMAT Score: 770 Wed Jun 17, 2015 11:57 am Quote: Can you please provide a few Official questions in which ONE refers to DIFFERENT ENTITY & questions in which ONE refers to SAME ENTITY ? That's a very specific request. Coincidentally, I was just working through the following sentence with a student: "Constructed at least as early as the Sui dynasty (A.D. 581-618), the Altar of Heaven, the oldest known altar used in Chinese state religious practice, is more than 1,000 years older than a similar ONE in Beijing and is the only altar found so far that predates the Qing dynasty (A.D. 1644-1912)." _________________ Veritas Prep | GMAT Instructor Veritas Prep Reviews Save$100 off any live Veritas Prep GMAT Course

Enroll in a Veritas Prep GMAT class completely for FREE. Wondering if a GMAT course is right for you? Attend the first class session of an actual GMAT course, either in-person or live online, and see for yourself why so many students choose to work with Veritas Prep. Find a class now!

### GMAT/MBA Expert

GMATGuruNY GMAT Instructor
Joined
25 May 2010
Posted:
14031 messages
Followed by:
1812 members
13060
GMAT Score:
790
Fri Jun 12, 2015 5:52 am
Quote:
Any medical test will sometimes fail to detect a condition when it is present and indicate that there is one when it is not.

(A) a condition when it is present and indicate that there is one
(B) when a condition is present and indicate that there is one
(C) a condition when it is present and indicate that it is present
(D) when a condition is present and indicate its presence
(E) the presence of a condition when it is there and indicate its presence
In A, both one and it seem to refer to a condition.
The result is a nonsensical meaning:
Any medical test will sometimes indicate that there is ONE CONDITION when A CONDITION is not.
Eliminate A.

B and D distort the meaning by implying that the purpose of a medical test is to detect a MOMENT IN TIME: WHEN a condition is present.
The purpose of a medical test is to detect the CONDITION itself, not WHEN the condition is present.
Eliminate B and D.

In E, the first it could refer to the presence or to a condition.
Since C avoids this issue and is free of errors, eliminate E.

The OA:
Any medical test will sometimes fail to detect a condition when it is present and indicate that it is present when it is not [present].
Here, each instance of it has the same, clear referent: a condition.
Note the use of ELLIPSIS: the word in brackets is omitted, but its presence is clearly understood.
The ellipsis is made clear by the PARALLEL FORMS: that IT IS PRESENT when IT IS NOT [PRESENT].
Only the OA offers these parallel forms at the end of the sentence.

_________________
Mitch Hunt
GMAT Private Tutor
GMATGuruNY@gmail.com
If you find one of my posts helpful, please take a moment to click on the "UPVOTE" icon.
Available for tutoring in NYC and long-distance.

Free GMAT Practice Test How can you improve your test score if you don't know your baseline score? Take a free online practice exam. Get started on achieving your dream score today! Sign up now.
RBBmba@2014 Legendary Member
Joined
30 May 2012
Posted:
889 messages
Followed by:
4 members
8
Sat Jun 13, 2015 7:23 am
Hi Mitch - few clarifications required on your above explanation! (PLEASE NOTE that the analysis of OA is clear to me but I'd like to be sure about the reasons for rejecting A)

GMATGuruNY wrote:
In A, both one and it seem to refer to a condition.
The result is a nonsensical meaning:
Any medical test will sometimes indicate that there is ONE CONDITION when A CONDITION is not.
WHY the option A can't mean this - Any medical test will sometimes indicate that there is (ONE=)A CONDITION when (it=)A CONDITION is not [present]. Could you please shed some light on where exactly I'm wrong with this interpretation ?

Also, for rejecting A, if we say that usage of there is BIT CONVOLUTED and C is more direct than A on this PARTICULAR aspect, will that reasoning hold good ?

### GMAT/MBA Expert

GMATGuruNY GMAT Instructor
Joined
25 May 2010
Posted:
14031 messages
Followed by:
1812 members
13060
GMAT Score:
790
Sun Jun 14, 2015 2:19 am
RBBmba@2014 wrote:
WHY the option A can't mean this - Any medical test will sometimes indicate that there is (ONE=)A CONDITION when (it=)A CONDITION is not [present]. Could you please shed some light on where exactly I'm wrong with this interpretation ?
PARALLEL FORMS should serve the SAME FUNCTION.
A: Any medical test will sometimes fail to detect a condition WHEN IT IS PRESENT and indicate that there is one WHEN IT IS NOT [PRESENT].
Here, WHEN IT IS PRESENT and WHEN IT IS NOT PRESENT are parallel forms.
As a result, each it should have the SAME REFERENT (a condition).
The result is a nonsensical meaning:
Any medical test will sometimes fail to detect a condition when THE CONDITION is present and indicate that there is one when THE CONDITION is not present.

Quote:
Also, for rejecting A, if we say that usage of there is BIT CONVOLUTED and C is more direct than A on this PARTICULAR aspect, will that reasoning hold good
This reasoning is valid.

_________________
Mitch Hunt
GMAT Private Tutor
GMATGuruNY@gmail.com
If you find one of my posts helpful, please take a moment to click on the "UPVOTE" icon.
Available for tutoring in NYC and long-distance.

Free GMAT Practice Test How can you improve your test score if you don't know your baseline score? Take a free online practice exam. Get started on achieving your dream score today! Sign up now.
RBBmba@2014 Legendary Member
Joined
30 May 2012
Posted:
889 messages
Followed by:
4 members
8
Mon Jun 15, 2015 5:02 am
GMATGuruNY wrote:
PARALLEL FORMS should serve the SAME FUNCTION.
Here, WHEN IT IS PRESENT and WHEN IT IS NOT PRESENT are parallel forms.
As a result, each it should have the SAME REFERENT (a condition).
The result is a nonsensical meaning:
Any medical test will sometimes fail to detect a condition when THE CONDITION is present and indicate that there is one when THE CONDITION is not present.
Mitch -Although you've confirmed the OTHER logic for eliminating A, I'd like to know how the above RED PHRASE has nonsensical meaning because as you said earlier each it and one refer to the SAME REFERENT (a condition). So option A stands out as Any medical test will sometimes indicate that there is (ONE=)A CONDITION when (it=)A CONDITION is not [present]. How this could be wrong grammatically ? (But YES, it's definitely MORE CONVOLUTED and less CONCISE than option C as you've confirmed in your immediate above post)

### GMAT/MBA Expert

GMATGuruNY GMAT Instructor
Joined
25 May 2010
Posted:
14031 messages
Followed by:
1812 members
13060
GMAT Score:
790
Tue Jun 16, 2015 4:27 am
RBBmba@2014 wrote:
Mitch -Although you've confirmed the OTHER logic for eliminating A, I'd like to know how the above RED PHRASE has nonsensical meaning because as you said earlier each it and one refer to the SAME REFERENT (a condition). So option A stands out as Any medical test will sometimes indicate that there is (ONE=)A CONDITION when (it=)A CONDITION is not [present]. How this could be wrong grammatically ? (But YES, it's definitely MORE CONVOLUTED and less CONCISE than option C as you've confirmed in your immediate above post)

In A, it seems to refer to a condition -- the condition discussed in the first clause.
Let's call this condition the FIRST CONDITION.
one serves to refer to a DIFFERENT condition from the first condition.
Conveyed meaning:
Any medical test will sometimes fail to detect a condition when it is present and indicate that there is A DIFFERENT CONDITION when the FIRST CONDITION IS NOT PRESENT.
Whereas the event in red constitutes a clear FAILURE, the event in green seems to constitute a SUCCESS (indicating that a different condition is present when the first condition is not present).
It is nonsensical for and to serve to connect such opposing thoughts.

_________________
Mitch Hunt
GMAT Private Tutor
GMATGuruNY@gmail.com
If you find one of my posts helpful, please take a moment to click on the "UPVOTE" icon.
Available for tutoring in NYC and long-distance.

Last edited by GMATGuruNY on Wed Jun 17, 2015 11:15 am; edited 1 time in total

Free GMAT Practice Test How can you improve your test score if you don't know your baseline score? Take a free online practice exam. Get started on achieving your dream score today! Sign up now.
RBBmba@2014 Legendary Member
Joined
30 May 2012
Posted:
889 messages
Followed by:
4 members
8
Wed Jun 17, 2015 10:53 am
GMATGuruNY wrote:
one serves to refer to a DIFFERENT condition from the first condition.
Hi GMATGuru - not able to get this STRAIGHT. How (& Why) we're deciding this ?

It'd be great if you could help!

### GMAT/MBA Expert

GMATGuruNY GMAT Instructor
Joined
25 May 2010
Posted:
14031 messages
Followed by:
1812 members
13060
GMAT Score:
790
Wed Jun 17, 2015 11:09 am
RBBmba@2014 wrote:
GMATGuruNY wrote:
one serves to refer to a DIFFERENT condition from the first condition.
Hi GMATGuru - not able to get this STRAIGHT. How (& Why) we're deciding this ?

It'd be great if you could help!
An analogy:
After John ate A COOKIE, Mary ate ONE.
Here, one does not serve to refer to the cookie making its way through John's digestive system.
Rather, it serves to refer to a DIFFERENT COOKIE: the ONE that Mary ate.

The same reasoning holds true for the usage of one in A.

_________________
Mitch Hunt
GMAT Private Tutor
GMATGuruNY@gmail.com
If you find one of my posts helpful, please take a moment to click on the "UPVOTE" icon.
Available for tutoring in NYC and long-distance.

Last edited by GMATGuruNY on Wed Jun 17, 2015 12:17 pm; edited 1 time in total

Free GMAT Practice Test How can you improve your test score if you don't know your baseline score? Take a free online practice exam. Get started on achieving your dream score today! Sign up now.
RBBmba@2014 Legendary Member
Joined
30 May 2012
Posted:
889 messages
Followed by:
4 members
8
Wed Jun 17, 2015 11:40 am
GMATGuruNY wrote:
GMATGuruNY wrote:
one serves to refer to a DIFFERENT condition from the first condition.
An analogy:
After John ate A COOKIE, Mary ate ONE.
Here, one does not serve to refer to the cookie making its way through John's digestive system.
Rather it serves to refer to a DIFFERENT COOKIE: the ONE that Mary ate.

The same reasoning holds true for the usage of one in A.
Much thanks GMATGuruNY.

Does ONE always have this sort of usage in GMAT ? If not, what are the OTHER usage of ONE on GMAT ?

Can you please provide a few Official questions in which ONE refers to DIFFERENT ENTITY & questions in which ONE refers to SAME ENTITY ?

Look forward to hear your feedback!

Last edited by RBBmba@2014 on Fri Jun 19, 2015 4:42 am; edited 1 time in total

### GMAT/MBA Expert

GMATGuruNY GMAT Instructor
Joined
25 May 2010
Posted:
14031 messages
Followed by:
1812 members
13060
GMAT Score:
790
Fri Jun 19, 2015 6:07 am
RBBmba@2014 wrote:
"Constructed at least as early as the Sui dynasty (A.D. 581-618), the Altar of Heaven, the oldest known altar used in Chinese state religious practice, is more than 1,000 years older than a similar ONE in Beijing and is the only altar found so far that predates the Qing dynasty (A.D. 1644-1912)."

in the SC you mentioned above, ONE has not been used as a STANDALONE rather preceded by SIMILAR. So eventually, it(re use of SIMILAR before ONE) makes clear that ONE refers to SAME ENTITY here.
This interpretation is not quite right.
The Altar of Heaven, THE OLDEST KNOWN ALTAR used in Chinese state religious practice, is more than 1,000 years older than A SIMILAR ONE in Beijing.
Here, THE OLDEST KNOWN ALTAR and A SIMILAR ONE are not the SAME altar.
It is not possible for both altars to be the OLDEST.
Clearly, one serves to refer to a DIFFERENT altar from the Altar of Heaven: ONE that can be found in Beijing and is similar to -- but not the same as -- the Altar of Heaven.

_________________
Mitch Hunt
GMAT Private Tutor
GMATGuruNY@gmail.com
If you find one of my posts helpful, please take a moment to click on the "UPVOTE" icon.
Available for tutoring in NYC and long-distance.

Free GMAT Practice Test How can you improve your test score if you don't know your baseline score? Take a free online practice exam. Get started on achieving your dream score today! Sign up now.

### GMAT/MBA Expert

DavidG@VeritasPrep Legendary Member
Joined
14 Jan 2015
Posted:
2667 messages
Followed by:
120 members
1153
GMAT Score:
770
Fri Jun 19, 2015 6:21 am
Quote:
Hence, I'd like to know whether you could shed light on my BOTH the above questions with OFFICIAL INSTANCES in which ONE refers to 1) SAME ENTITY and 2) DIFFERENT ENTITY ?
Consider a couple of simple sentences:

"The car that Dave bought is similar to the ONE that Mitch bought." Clearly, I didn't buy Mitch's car. I bought a different car that happened to have some of the same qualities as Mitch's car.

But if I write, "The car that Dave bought is the ONE he crashed into his garage." Well, this time, "one" refers to the car I just bought, and my wife is not going to be happy with me.

_________________
Veritas Prep | GMAT Instructor

Veritas Prep Reviews
Save $100 off any live Veritas Prep GMAT Course Enroll in a Veritas Prep GMAT class completely for FREE. Wondering if a GMAT course is right for you? Attend the first class session of an actual GMAT course, either in-person or live online, and see for yourself why so many students choose to work with Veritas Prep. Find a class now! RBBmba@2014 Legendary Member Joined 30 May 2012 Posted: 889 messages Followed by: 4 members Upvotes: 8 Sat Jun 20, 2015 4:07 am Thanks Guys for your clarifications. So,what I understand from BOTH of your replies is that in GMAT, ONE can refer either to DIFFERENT ENTITY or to SAME ENTITY and this can ONLY be determined from the MEANING aspect of the sentence. Right ? Correct me please if wrong! Look forward to your confirmation. ### GMAT/MBA Expert DavidG@VeritasPrep Legendary Member Joined 14 Jan 2015 Posted: 2667 messages Followed by: 120 members Upvotes: 1153 GMAT Score: 770 Sat Jun 20, 2015 6:06 am Quote: So,what I understand from BOTH of your replies is that in GMAT, ONE can refer either to DIFFERENT ENTITY or to SAME ENTITY and this can ONLY be determined from the MEANING aspect of the sentence. Right ? That's a very reasonable conclusion. _________________ Veritas Prep | GMAT Instructor Veritas Prep Reviews Save$100 off any live Veritas Prep GMAT Course

Enroll in a Veritas Prep GMAT class completely for FREE. Wondering if a GMAT course is right for you? Attend the first class session of an actual GMAT course, either in-person or live online, and see for yourself why so many students choose to work with Veritas Prep. Find a class now!

### Best Conversation Starters

1 lheiannie07 80 topics
2 LUANDATO 59 topics
3 ardz24 52 topics
4 AAPL 45 topics
5 Roland2rule 43 topics
See More Top Beat The GMAT Members...

### Most Active Experts

1 Rich.C@EMPOWERgma...

EMPOWERgmat

133 posts
2 Brent@GMATPrepNow

GMAT Prep Now Teacher

131 posts
3 GMATGuruNY

The Princeton Review Teacher

130 posts
4 Scott@TargetTestPrep

Target Test Prep

118 posts
5 Jeff@TargetTestPrep

Target Test Prep

114 posts
See More Top Beat The GMAT Experts