|
|
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.
01 Sep 2021, 03:19
Kudos
Bookmarks
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
76% (01:19) correct
24%
(01:18)
wrong
based on 131
sessions
History
Date
Time
Result
Not Attempted Yet
If both a and b are nonzero integers, which of the following must be positive?
I. a^2 + b^2
II. a^2 – b^2
III. (a – b)^2
A. I only
B. II only
C. III only
D. I and II
E. I, II, and III
I. a^2 + b^2
II. a^2 – b^2
III. (a – b)^2
A. I only
B. II only
C. III only
D. I and II
E. I, II, and III
Updated on: 02 Sep 2021, 09:03
Originally posted by tranthanhbinh on 01 Sep 2021, 06:06.
Last edited by tranthanhbinh on 02 Sep 2021, 09:03, edited 1 time in total.
Last edited by tranthanhbinh on 02 Sep 2021, 09:03, edited 1 time in total.
Kudos
Bookmarks
I. The squares of non-zero integers are always positives. Positive + Positive = Positive
II. The difference of two positives is not always positive. If |a| = |b| => the difference is 0. If |a| < |b| => the difference is negative.
III. Positive except for the case in which a = b.
=> Answer choice A
II. The difference of two positives is not always positive. If |a| = |b| => the difference is 0. If |a| < |b| => the difference is negative.
III. Positive except for the case in which a = b.
=> Answer choice A
26 Dec 2024, 06:42
Kudos
Bookmarks
Good use of concept "positive"
