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ab<0
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16 Feb 2021, 04:59
16 Feb 2021, 04:59
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79% (00:42) correct
20% (00:40) wrong based on 87 sessions
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\(ab<0\)
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
Quantity A |
Quantity B |
\(|a+b|\) |
\(|a|+|b|\) |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
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ab<0
[#permalink]
16 Feb 2021, 08:01
16 Feb 2021, 08:01
1
Carcass wrote:
\(ab<0\)
Quantity A |
Quantity B |
\(|a+b|\) |
\(|a|+|b|\) |
In general, we can say:
If \(ab<0\), then \(|a+b| < |a|+|b|\)
If \(ab>0\), then \(|a+b| = |a|+|b|\)
Answer: B
General Discussion
Re: ab<0
[#permalink]
16 Feb 2021, 07:30
16 Feb 2021, 07:30
1
Hi,
ab<0
Thus, either a or b could be negative and the other has to be positive both of them cannot be positive or negative or zero.
Quantity A: |a+b|--> If a=1 & b=-2=|1+(-2)|=1
Quantity B: |a|+|b|-->If a=1 & b=-2=|1|+|-2|=3
You can try other numbers A<B
IMO B
ab<0
Thus, either a or b could be negative and the other has to be positive both of them cannot be positive or negative or zero.
Quantity A: |a+b|--> If a=1 & b=-2=|1+(-2)|=1
Quantity B: |a|+|b|-->If a=1 & b=-2=|1|+|-2|=3
You can try other numbers A<B
IMO B
