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BillyZ
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GMAT 1: 750 Q51 V40 (Online)
Posts: 1,134
09 Mar 2017, 22:41
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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:
95%
(hard)
Question Stats:
24% (02:04) correct
76%
(02:10)
wrong
based on 115
sessions
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Time
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Not Attempted Yet
For integers x and y, if \(x<a<2\) and \(-2<b<y\) , is 1 contained in the range of ab?
1) \(x=1\)
2) \(x < y\)
1) \(x=1\)
2) \(x < y\)
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
12 Mar 2017, 05:11
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ziyuen
Hi,
Lowest of two in ab will be 2*-2=-4...
To find if 1 is there, we have to find if the higher range is above 1..
The other three possibilities for highest ab are x*(-2), 2y and xy....
A) So if x is -ive, x*-2 will be POSITIVE and > or = 2.....Ans will be YES
B) if y is POSITIVE 2*y will be >or =2....Ans will be again YES
Let's see the statements..
(1) x=1...
x as positive ALONE does not answer the Q, it will require y to be POSITIVE..
Insufficient
(2) x<y..
If y is positive, answer from (B) will be YES..
If y is NEGATIVE or 0, x will also be NEGATIVE, so from (A), and will be YES..
Thus sufficient
B
Utsharmakarsh
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12 Mar 2017, 05:20
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For integers x and y, if x<a<2x<a<2 and −2<b<y−2<b<y , is 1 contained in the range of ab?
1) x=1x=1
2) x<y
(1) x=1
x as positive ALONE does not answer the Q, it will require y to be POSITIVE..
Insufficient
(2) x<y
If y is positive, answer from (B) will be YES..
If y is NEGATIVE or 0, x will also be NEGATIVE, so from (A), and will be YES..
sufficient
1) x=1x=1
2) x<y
(1) x=1
x as positive ALONE does not answer the Q, it will require y to be POSITIVE..
Insufficient
(2) x<y
If y is positive, answer from (B) will be YES..
If y is NEGATIVE or 0, x will also be NEGATIVE, so from (A), and will be YES..
sufficient
