GRE Prep 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.
If ab > 0, then which one of the following must be true? (A)
[#permalink]
25 Mar 2019, 11:45
25 Mar 2019, 11:45
Expert Reply
00:00
Question Stats:
83% (00:43) correct
16% (00:17) wrong based on 109 sessions
Hide Show timer Statistics
If \(ab > 0\), then which one of the following must be true?
(A) \(\frac{a}{b} > 0\)
(B) \(a – b > 0\)
(C) \(a + b > 0\)
(D) \(b – a > 0\)
(E) \(a + b < 0\)
(A) \(\frac{a}{b} > 0\)
(B) \(a – b > 0\)
(C) \(a + b > 0\)
(D) \(b – a > 0\)
(E) \(a + b < 0\)
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: If ab > 0, then which one of the following must be true? (A)
[#permalink]
25 Mar 2019, 14:31
25 Mar 2019, 14:31
1
Carcass wrote:
If \(ab > 0\), then which one of the following must be true?
(A) \(\frac{a}{b} > 0\)
(B) \(a – b > 0\)
(C) \(a + b > 0\)
(D) \(b – a > 0\)
(E) \(a + b < 0\)
(A) \(\frac{a}{b} > 0\)
(B) \(a – b > 0\)
(C) \(a + b > 0\)
(D) \(b – a > 0\)
(E) \(a + b < 0\)
If ab > 0, then EITHER a and b are both positive, OR a and b are both negative
If a and b are both positive, then a/b is positive
If a and b are both negative, then a/b is positive
Answer: A
Cheers,
Brent
Re: If ab > 0, then which one of the following must be true? (A)
[#permalink]
23 Apr 2022, 17:43
23 Apr 2022, 17:43
1
if ab > 0, then a and b must have same sign. Either both positive or both negative integers
(A) a/b > 0 => whether a and b are both positive or both negative integers, both will result in values > 0
(B) a – b > 0 => if a and b are both negative integers for example a = -2 and b = -1, a - b = -2 - (-1) = -1, it cannot be greater than 0
(C) a + b > 0 => if a and b are both negative integers, it can never be greater than 0
(D) b–a > 0 => if a and b are both positive integers for example b = 1 and a = 2, b - a = 1 - 2 = -1, it cannot be greater than 0
(E) a + b < 0, if a and b are both positive integers, it can never be less than 0
Correct Answer: A
(A) a/b > 0 => whether a and b are both positive or both negative integers, both will result in values > 0
(B) a – b > 0 => if a and b are both negative integers for example a = -2 and b = -1, a - b = -2 - (-1) = -1, it cannot be greater than 0
(C) a + b > 0 => if a and b are both negative integers, it can never be greater than 0
(D) b–a > 0 => if a and b are both positive integers for example b = 1 and a = 2, b - a = 1 - 2 = -1, it cannot be greater than 0
(E) a + b < 0, if a and b are both positive integers, it can never be less than 0
Correct Answer: A
