Stmt I
x<2 x>-2
-2<x<2
-1,0,1 or any fraction/decimal in the range above
INSUFF
Stmt II
|X| = 3X-2
X = 3X-2
X=1
-X=3X-2
-4X=-2
X=1/2
x = 1 x=1/2
Only 1 works in the equation above WHEN plugged back
SUFF
Choose B)
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What is x?
Source: Beat The GMAT — Data Sufficiency |
Can't we eliminate 1/2 in statement two.cramya wrote:It should be E) unless I missed something
Stmt I
x<2 x>-2
-2<x<2
-1,0,1 or any fraction/decimal in the range above
INSUFF
Stmt II
x = 1 x=1/2
INSUFF
Stmt I and II still 2 answers
INSUFF
Choose E)
|x| = 3(1/2) - 2
|x| = 3/2 - 2
|x| = -1/2
1/2 ≠ -1/2
The OA says " because 1/2 contradicts with our assumption while evaluating x as a negative number, so the answer is x=1 , Therefor the answer is B"..
Abdulla
Dmateer, u r correct.
I went with E) and immediately realized I dint plug it back in to the original eqn and check and then I corrected it
B) it is
I went with E) and immediately realized I dint plug it back in to the original eqn and check and then I corrected it
B) it is
-
ronniecoleman
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What is x?
(1) |x| < 2
(2) |x| = 3x – 2
1: -2< x < 2
2: x = 3x -2
x = 1
-x = 3x-2
x = 1/2 ( not allowed value )
so x = 1
hence IMO B
(1) |x| < 2
(2) |x| = 3x – 2
1: -2< x < 2
2: x = 3x -2
x = 1
-x = 3x-2
x = 1/2 ( not allowed value )
so x = 1
hence IMO B
Admission champion, Hauz khaz
011-27565856
011-27565856
A)x=-1 1<2 true
x=1 1<2 true
Insuff
B)
x=1
1=3(1)-2
True
Only x=1
OA B
vishu
x=1 1<2 true
Insuff
B)
x=1
1=3(1)-2
True
Only x=1
OA B
vishu
KILL !! DIE !! or BEAT my FEAR !!! de@D END!!
oops I fell for the E trap.
So the key takeaway for problems using Absolute Equalities is:
Plug back the two values into the eqn to verify that the value is returned.
Pls let me know if someone can add anything else.
thanks
So the key takeaway for problems using Absolute Equalities is:
Plug back the two values into the eqn to verify that the value is returned.
Pls let me know if someone can add anything else.
thanks
