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TheMechanic
Joined: 19 Oct 2012
Last visit: 05 Jul 2018
Posts: 207
Given Kudos: 103
Location: India
Concentration: General Management, Operations
Schools: Anderson '16 Tepper '16 Kelley '16 Jones '16 (S) Carlson '16 ISB '18 (II) Duke '20 (S) McCombs '20 (II)
GMAT 1: 660 Q47 V35
GMAT 2: 710 Q50 V38
GPA: 3.81
WE:Information Technology (Computer Software)
Schools: Anderson '16 Tepper '16 Kelley '16 Jones '16 (S) Carlson '16 ISB '18 (II) Duke '20 (S) McCombs '20 (II)
GMAT 2: 710 Q50 V38
Posts: 207
17 Oct 2017, 06:26
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
70% (01:22) correct
30%
(01:17)
wrong
based on 1389
sessions
History
Date
Time
Result
Not Attempted Yet
Is the tallest child in Class A taller than tallest child in Class B?
1) The range of the heights of the children in Class A is greater than the range of the heights of the children in class B.
2) The shortest child in Class A is shorter than the shortest child in Class B.
1) The range of the heights of the children in Class A is greater than the range of the heights of the children in class B.
2) The shortest child in Class A is shorter than the shortest child in Class B.
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17 Oct 2017, 07:47
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1) The range of the heights of the children in Class A is greater than the range of the heights of the children in class B.
- The range is greater, but may not end with the tallest child
2) The shortest child in Class A is shorter than the shortest child in Class B.
- Does not address the questions
Combined - We do not have a starting point for the range.
E
- The range is greater, but may not end with the tallest child
2) The shortest child in Class A is shorter than the shortest child in Class B.
- Does not address the questions
Combined - We do not have a starting point for the range.
E
26 Nov 2017, 00:47
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Lets say shortest child in class A has height a1, and tallest child in class A has height a2.
Lets say shortest child in class B has height b1, and tallest child in class A has height b2.
We need to know whether a2 > b2 or not? (or whether a2-b2 > 0 or not)
(1) Range of height of children in class A > range of height of children in class B
OR a2 - a1 > b2 - b1 Or a2-b2 > a1-b1
Here we dont know whether a1-b1 is > 0 or not, So cannot answer. Insufficient
(2) Given a1 < b1. This doesnt tell us whether a2 > b2 or not, just tells us that a1-b1 < 0 or negative. Insufficient.
Combining the two statements, a2-b2 > a1-b1 or a2-b2 is greater than a negative quantity. But still we cant say whether a2-b2 is greater than 0 or not, or whether a2>b2 or not? Still insufficient.
Hence E answer
Lets say shortest child in class B has height b1, and tallest child in class A has height b2.
We need to know whether a2 > b2 or not? (or whether a2-b2 > 0 or not)
(1) Range of height of children in class A > range of height of children in class B
OR a2 - a1 > b2 - b1 Or a2-b2 > a1-b1
Here we dont know whether a1-b1 is > 0 or not, So cannot answer. Insufficient
(2) Given a1 < b1. This doesnt tell us whether a2 > b2 or not, just tells us that a1-b1 < 0 or negative. Insufficient.
Combining the two statements, a2-b2 > a1-b1 or a2-b2 is greater than a negative quantity. But still we cant say whether a2-b2 is greater than 0 or not, or whether a2>b2 or not? Still insufficient.
Hence E answer
