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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:
63% (01:31) correct
37%
(01:08)
wrong
based on 93
sessions
History
Date
Time
Result
Not Attempted Yet
Is xy < 12?
(1) x < 4 and y < 3
(2) x^2 < 121 and y^2 < 4
(1) x < 4 and y < 3
(2) x^2 < 121 and y^2 < 4
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
For relevant Data Sufficiency questions, please check the Data Sufficiency forum:
Data Sufficiency Forum
Data Sufficiency Forum
06 Jul 2018, 07:30
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Is xy < 12?
(1) x < 4 and y < 3.
If x = y = 0, then xy = 0 < 12. So, in this case we have an YES answer.
If x = y = -10, then xy = 100 > 12. So, in this case we have a NO answer.
Not sufficient.
(2) x^2 < 121 and y^2 < 4:
-11 < x < 11 and -2 < y < 2.
If x = y = 0, then xy = 0 < 12. So, in this case we have an YES answer.
If x = -10 and y = -1.5 then xy = 15 > 12. So, in this case we have a NO answer.
Not sufficient.
(1)+(2) -11 < x < 4 and -2 < y < 2:
If x = y = 0, then xy = 0 < 12. So, in this case we have an YES answer.
If x = -10 and y = -1.5 then xy = 15 > 12. So, in this case we have a NO answer.
Not sufficient.
Answer: E.
Hope it's clear.
P.S. Please provide the OA's when posting questions. Thank you.
(1) x < 4 and y < 3.
If x = y = 0, then xy = 0 < 12. So, in this case we have an YES answer.
If x = y = -10, then xy = 100 > 12. So, in this case we have a NO answer.
Not sufficient.
(2) x^2 < 121 and y^2 < 4:
-11 < x < 11 and -2 < y < 2.
If x = y = 0, then xy = 0 < 12. So, in this case we have an YES answer.
If x = -10 and y = -1.5 then xy = 15 > 12. So, in this case we have a NO answer.
Not sufficient.
(1)+(2) -11 < x < 4 and -2 < y < 2:
If x = y = 0, then xy = 0 < 12. So, in this case we have an YES answer.
If x = -10 and y = -1.5 then xy = 15 > 12. So, in this case we have a NO answer.
Not sufficient.
Answer: E.
Hope it's clear.
P.S. Please provide the OA's when posting questions. Thank you.
06 Jul 2018, 07:32
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Bookmarks
neiln413b
Similar questions to practice:
https://gmatclub.com/forum/is-ab-12-1-a ... 91461.html (OG)
https://gmatclub.com/forum/is-ab-9-1-a- ... 66246.html (Grockit)
Hope it helps.
