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If ab > 0, then which one of the following must be true? (A)
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25 Mar 2019, 11:45
25 Mar 2019, 11:45
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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) \(a + b < 0\)
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Re: If ab > 0, then which one of the following must be true? (A)
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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)
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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
