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31 Jul 2019, 23:49
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
90% (01:05) correct
10%
(01:07)
wrong
based on 213
sessions
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If X > Y and Z is a positive number, which of the following relationship is not true ?
A. XZ > YZ
B. Z-X > Z-Y
C. X-Z > Y-Z
D. X/Z > Y/Z
E. X+Z > Y+Z
A. XZ > YZ
B. Z-X > Z-Y
C. X-Z > Y-Z
D. X/Z > Y/Z
E. X+Z > Y+Z
01 Aug 2019, 00:04
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Bunuel
A. XZ > YZ
--> XZ - YZ > 0
--> Z(X - Y) > 0
--> Positive*Positive = Positive -- True
B. Z-X > Z-Y
--> 0 > Z - Y - Z + X
--> X - Y < 0
--> X < Y -- NOT True
C. X-Z > Y-Z
--> X - Z - Y + Z > 0
--> X - Y > 0
--> X > Y -- True
D. X/Z > Y/Z
--> X/Z - Y/Z > 0
--> (X - Y)/Z > 0
00> Positive/Positive = Positive -- True
E. X+Z > Y+Z
--> X > Y -- True
IMO Option B
Pls Hit Kudos if you like the solution
Updated on: 01 Aug 2019, 00:49
Originally posted by freedom128 on 01 Aug 2019, 00:13.
Last edited by freedom128 on 01 Aug 2019, 00:49, edited 3 times in total.
Last edited by freedom128 on 01 Aug 2019, 00:49, edited 3 times in total.
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If X > Y and Z is a positive number, which of the following relationship is not true ?
Try Z=2 for all answers
A. XZ > YZ
2X > 2Y --> X>Y (TRUE)
B. Z-X > Z-Y
2-X > 2-Y --> Y > X (FALSE!! The correct answer)
C. X-Z > Y-Z
X-2 > Y-2 --> X > Y (TRUE)
D. X/Z > Y/Z
X/2 > Y/2 --> X > Y (TRUE)
E. X+Z > Y+Z
X+2 > Y+2 --> X > Y (TRUE)
Answer is (B)
pls Hit Kudos if you like the solution
Try Z=2 for all answers
A. XZ > YZ
2X > 2Y --> X>Y (TRUE)
B. Z-X > Z-Y
2-X > 2-Y --> Y > X (FALSE!! The correct answer)
C. X-Z > Y-Z
X-2 > Y-2 --> X > Y (TRUE)
D. X/Z > Y/Z
X/2 > Y/2 --> X > Y (TRUE)
E. X+Z > Y+Z
X+2 > Y+2 --> X > Y (TRUE)
Answer is (B)
pls Hit Kudos if you like the solution
