|
|
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Updated on: 22 Jan 2020, 08:58
Originally posted by archieprima on 22 Jan 2020, 08:56.
Last edited by Bunuel on 22 Jan 2020, 08:58, edited 1 time in total.
Last edited by Bunuel on 22 Jan 2020, 08:58, edited 1 time in total.
Renamed the topic, edited the question and added the OA.
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
89% (00:39) correct
11%
(00:50)
wrong
based on 36
sessions
History
Date
Time
Result
Not Attempted Yet
Is the integer x equal to 81?
(1) x is the square of an integer.
(2) 80 < x < 90
(1) x is the square of an integer.
(2) 80 < x < 90
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
22 Jan 2020, 10:22
Kudos
Bookmarks
S1: x is the square of an integer.
x can be any value.... Not Sufficient.
S2: 80 < x < 90
In this case also, x can be any value.... Not Sufficient.
S1+S2
Square of integers(positive or negative) 8,9,10...be 64, 81, 100.
Only 81 satisfies.......................Sufficient
Option C
x can be any value.... Not Sufficient.
S2: 80 < x < 90
In this case also, x can be any value.... Not Sufficient.
S1+S2
Square of integers(positive or negative) 8,9,10...be 64, 81, 100.
Only 81 satisfies.......................Sufficient
Option C
22 Jan 2020, 11:13
Kudos
Bookmarks
Is the integer x equal to 81?
(1) x is the square of an integer.
—> x = 1, 4, 9, . . . . 64, 82, 100, . . .
Insufficient
(2) 80 < x < 90
—> x = 81, 82, 83,. . . 89
Insufficient
Combining (1) & (2),
x = 81
Sufficient
Option C
Posted from my mobile device
(1) x is the square of an integer.
—> x = 1, 4, 9, . . . . 64, 82, 100, . . .
Insufficient
(2) 80 < x < 90
—> x = 81, 82, 83,. . . 89
Insufficient
Combining (1) & (2),
x = 81
Sufficient
Option C
Posted from my mobile device
