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aliensoybean
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Posted: Fri Jan 11, 2008 2:17 am |
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Source: MGMAT CAT 5 number 12.
If x is not equal to 0, is |x| less than 1?
(1) x/|x| < x
(2) |x| > x
OA is C, my answer is E.
It looks like this one has gotten quite a few attention, but I still don't know how it is resolved.
Here is how I understand it.
Rephrasing the question, is -1<x<1 (not including 0)
1. Two scenarios result depending on whether X is positive or negative
a. if X is positive then...
X/X<X
1<X
b. if x is negative then...
-X/X<-X
-1<-X
1>X
okay, from this statement, if you were to graph on a number link would be 1<X , X<1
INSUFFICIENT
2. This tells me that X is a negative, could be a negative number or negative fraction. INSUFFICIENT
3. Together, since statement 2 tells me that X is negative, then, the following scenario is accurate:
-X/X<-X
-1<-X
1>X
Okay, X is less than 1, but is it -1<x<1 ? There is no way of telling. Hence it is E. Not C.
Please help if you think my reasoning in incorrect
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shaji
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Posted: Fri Jan 11, 2008 10:36 am |
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| aliensoybean wrote: |
Source: MGMAT CAT 5 number 12.
If x is not equal to 0, is |x| less than 1?
(1) x/|x| < x
(2) |x| > x
OA is C, my answer is E.
It looks like this one has gotten quite a few attention, but I still don't know how it is resolved.
Here is how I understand it.
Rephrasing the question, is -1<x<1 (not including 0)
1. Two scenarios result depending on whether X is positive or negative
a. if X is positive then...
X/X<X
1<X
b. if x is negative then...
-X/X<-X
-1<-X
1>X
okay, from this statement, if you were to graph on a number link would be 1<X , X<1
INSUFFICIENT
2. This tells me that X is a negative, could be a negative number or negative fraction. INSUFFICIENT
3. Together, since statement 2 tells me that X is negative, then, the following scenario is accurate:
-X/X<-X
-1<-X
1>X
Okay, X is less than 1, but is it -1<x<1 ? There is no way of telling. Hence it is E. Not C.
Please help if you think my reasoning in incorrect |
See response in MGMAT CAT
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