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Must be True Question

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Must be True Question

by vidhya16 » Wed Apr 13, 2011 12:47 am
All,

James weighs more than Kelly.
Luis weighs more than Mark.
Mark weighs less than Ned.
Kelly and Ned are exactly the same weight.

If the information above is true, which of the following must also be true?
(A) Luis weighs more than Ned.
(B) Luis weighs more than James.
(C) Kelly weighs less than Luis.
(D) James weighs more than Mark
(E) Kelly weighs less than Mark.

What's the best way to solve this reasoning?

J> K, L>M , M< N , K = N. This equation can be further deduced as J>K,N > M - > James weighs more than Mark.

IMO D

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Source: — Critical Reasoning |
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by bubbliiiiiiii » Wed Apr 13, 2011 12:53 am
IMO A.

Is this a GMAT question? :O
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by mundasingh123 » Wed Apr 13, 2011 1:43 am
this is not gmat. D is the answer
arrange in order of weight.
j --L?
kn --L?
-----L?
m
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by vidhya16 » Wed Apr 13, 2011 2:06 am
Definitely it is a GMAT question.
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by HSPA » Wed Apr 13, 2011 2:12 am
s1 J s2 K/N s3 N M ---> decreasing order

L can fill any of the three spaces,
1) ignore A,B,C
2) E is wrong

J (1st or 2nd) lot greater than last M
First take: 640 (50M, 27V) - RC needs 300% improvement
Second take: coming soon..
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by vidhya16 » Wed Apr 13, 2011 2:17 am
OA - D
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by badpoem » Wed Apr 13, 2011 10:17 am
IMO (D)

what have we got?

J>K.

L>M<N=K.


(A) Luis weighs more than Ned. - could be true (since both L and N > M. but relation between L and N is unknown.

(B) Luis weighs more than James - again replace K in the above logic. - could be true.

(C) Kelly weighs less than Luis. - could be true - refer logic of above.

(D) James weighs more than Mark J>K=N>M. Therefore, J>M - must be true!

(E) Kelly weighs less than Mark - false.
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by Testluv » Wed Apr 13, 2011 9:09 pm
First of all, this is definitely NOT a GMAT question.

Second of all, the correct answer is most definitely choice A, not (D).

From the information in the passage, we can infer the following:

(I) L...M...(K=N)
(II) J...(K=N)

From (I), we can see that (A) must be true. However, we don't know how J relates to L or M. L...M, but J can intervene any where (before L, in between L and M or afer M).
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by vidhya16 » Wed Apr 13, 2011 11:42 pm
TestLuv,

This is one the question in the GMAT practice set I have. What makes you guys think it is not a GMAT question?

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by mundasingh123 » Thu Apr 14, 2011 12:19 am
vidhya16 wrote:TestLuv,

This is one the question in the GMAT practice set I have. What makes you guys think it is not a GMAT question?

Ta
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by bubbliiiiiiii » Thu Apr 14, 2011 12:51 am
Ta,

May be the source would help to validate the question.

Can you post the source?
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by mundasingh123 » Thu Apr 14, 2011 12:56 am
This topic does not warrant much discussion.This question must belong to the old gmat paper tests that were phased out to usher in the online Gmat version.It was a long time back and such questions no longer feature on the gmat.
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by Testluv » Thu Apr 14, 2011 7:33 pm
vidhya16 wrote:TestLuv,

This is one the question in the GMAT practice set I have. What makes you guys think it is not a GMAT question?

Ta
Hi vidhya,

Munda's reply, above, nails it!
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by vidhya16 » Thu Apr 14, 2011 11:27 pm
Thanks.
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by HeintzC2 » Fri Oct 14, 2011 12:25 pm
This expert's answer is definitely not correct.

We are given: J>K, K=N, and M<N
THEREFORE J>K,N>M
James weighs more than Mark is definitely given through the data available.
Testluv wrote:First of all, this is definitely NOT a GMAT question.

Second of all, the correct answer is most definitely choice A, not (D).

From the information in the passage, we can infer the following:

(I) L...M...(K=N)
(II) J...(K=N)

From (I), we can see that (A) must be true. However, we don't know how J relates to L or M. L...M, but J can intervene any where (before L, in between L and M or afer M).
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