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June is taller than Kristin. Letty is taller than Maria.

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June is taller than Kristin. Letty is taller than Maria. [#permalink] New post 17 Aug 2011, 10:59
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

88% (02:04) correct 13% (01:15) wrong based on 16 sessions
June is taller than Kristin.
Letty is taller than Maria.
Maria is shorter than Nancy.
Kristin and Nancy are exactly the same height.
If the information above is true, which of the following must also be true?
(A) Letty is taller than Nancy.
(B) Letty is taller than June.
(C) Kristin is shorter than Letty.
(D) June is taller than Maria.
(E) Kristin is shorter than Maria.


Will be interesting to see time taken to do this. So please post time if possible.
[Reveal] Spoiler: OA

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Re: CR Tall [#permalink] New post 17 Aug 2011, 11:04
the answer is D by using inequalities
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Re: CR Tall [#permalink] New post 17 Aug 2011, 11:12
i am sorry. i sent my reply wih no explenation:

J > K
**** N> M

(N=K THEN N IS EXACTLY BELOW K
IF L>M THEN L IS FROM THE RANGE OF BIGGER THAN M TO BIGGER THAN G (POSSIBLE NOT MUST) SO L could be bigger then J /equal to J/bigger then N (OR K)/ equal to N(K) /must be bigger then M


S1- L>N COULD BE TRUE BUT NOT MUST.
S2- L>J - COULD BE TRUE BUT NOT MUST
K<L- COULD BE TRUE BUT NOT MUST (N=K)
J>M MUST BE TRUE -LOOK AT THE INEQUALITY
K<M- IF K=N AND N>M THEN K>M .

if create the chain correctly (DO STAIRS) it can take less than 1 minute:you start with J>K THEN SEE THAT N=K PUT IT BELOW K. THEN U KNOW THAT N>M AND IT'S SOLVED.
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Last edited by dimri10 on 17 Aug 2011, 12:01, edited 1 time in total.
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Re: CR Tall [#permalink] New post 17 Aug 2011, 11:34
jamifahad wrote:
Will be interesting to see time taken to do this. So please post time if possible.

June is taller than Kristin.
Letty is taller than Maria.
Maria is shorter than Nancy.
Kristin and Nancy are exactly the same height.
If the information above is true, which of the following must also be true?
(A) Letty is taller than Nancy.
(B) Letty is taller than June.
(C) Kristin is shorter than Letty.
(D) June is taller than Maria.
(E) Kristin is shorter than Maria.


1:19
J>K=N>M
&
L>M

A) No idea
B) No idea
C) No idea
D) True.
E) False.

Ans: "D"
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Re: CR Tall [#permalink] New post 17 Aug 2011, 14:01
D, draw the heights on a line chart. L could be taller than M, all of M, K and N, or all of M, K, N and J
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Re: CR Tall [#permalink] New post 17 Aug 2011, 18:43
1:25 with D
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Re: CR Tall [#permalink] New post 18 Aug 2011, 08:54
01:02

J>K
L>M
M<N
K=N

Hence (all Ks can be replaced by Ns and vice versa):
M<K
J>N

J>K and M<K (which is the same as K>M)
result in J>K>M
which says J>M

Is any of these inequalities given? Yes, the last one!
Re: CR Tall   [#permalink] 18 Aug 2011, 08:54
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