ab = 0?
(1) a + b + ab = 0
(2) a - b = 0
Can some experts find the best Option in this?
OA E
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ab = 0?
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BTGmoderatorDC
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DavidG@VeritasPrep
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Statement 1 - Case 1: a = 0 and b = 0. YES ab = 0lheiannie07 wrote:ab = 0?
(1) a + b + ab = 0
(2) a - b = 0
Can some experts find the best Option in this?
OA E
Case 2: a = -2 and b = -2. NO ab is not 0.
Not sufficient.
Statement 2: If a- b =0, then a = b. Notice that we can reuse both cases from statement 1, giving us a YES and a NO, both for statement 2 and together. Not sufficient.
The answer is E
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BTGmoderatorDC
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Thanks a lot!DavidG@VeritasPrep wrote:Statement 1 - Case 1: a = 0 and b = 0. YES ab = 0lheiannie07 wrote:ab = 0?
(1) a + b + ab = 0
(2) a - b = 0
Can some experts find the best Option in this?
OA E
Case 2: a = -2 and b = -2. NO ab is not 0.
Not sufficient.
Statement 2: If a- b =0, then a = b. Notice that we can reuse both cases from statement 1, giving us a YES and a NO, both for statement 2 and together. Not sufficient.
The answer is E
