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Updated on: 22 Oct 2019, 23:17
Originally posted by EMPOWERgmatRichC on 11 Oct 2019, 18:21.
Last edited by EMPOWERgmatRichC on 22 Oct 2019, 23:17, edited 1 time in total.
Last edited by EMPOWERgmatRichC on 22 Oct 2019, 23:17, edited 1 time in total.
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C
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:
78% (01:29) correct
22%
(01:25)
wrong
based on 393
sessions
History
Date
Time
Result
Not Attempted Yet
EMPOWERgmat DS Series:
Pack 3, Question 1
If a < b, is a < c?
(1) (a)(c) = 0
(2) a + b = 0
2 Week Window To Win An $85 EMPOWERgmat Tuition Credit (1 Month Free!)
Share your explanation! The GMAT Club member with the most verified Kudos in total on the 10 question PS & DS Block 3 question packs will win an $85 EMPOWERgmat tuition credit, which will entitle the winner to a full month of complete access to the EMPOWERgmat system. Even if you're not sure about your answer or your rationale, share your explanation to help boost your learning and earn a chance to win. We have increased the contest window to 2 weeks from the posted date of the question - so that you can maximize your chances and answer all of the questions in each set!
To be eligible, your explanation must be submitted within the 2 week window after this post was created and should explain your reasoning why the answer you chose is correct
The OA will be held until a 1 week window has lapsed.
Links to the entire list of Quant and Verbal questions can be found here: EMPOWERgmat Forum Contest!...
Pack 3, Question 1
If a < b, is a < c?
(1) (a)(c) = 0
(2) a + b = 0
2 Week Window To Win An $85 EMPOWERgmat Tuition Credit (1 Month Free!)
Share your explanation! The GMAT Club member with the most verified Kudos in total on the 10 question PS & DS Block 3 question packs will win an $85 EMPOWERgmat tuition credit, which will entitle the winner to a full month of complete access to the EMPOWERgmat system. Even if you're not sure about your answer or your rationale, share your explanation to help boost your learning and earn a chance to win. We have increased the contest window to 2 weeks from the posted date of the question - so that you can maximize your chances and answer all of the questions in each set!
To be eligible, your explanation must be submitted within the 2 week window after this post was created and should explain your reasoning why the answer you chose is correct
The OA will be held until a 1 week window has lapsed.
Links to the entire list of Quant and Verbal questions can be found here: EMPOWERgmat Forum Contest!...
11 Oct 2019, 19:03
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If a < b, is a < c?
(1) (a)(c) = 0
This tells us that at least one of the two, a and c, is 0..
(2) a + b = 0
a=-b, and a<b tells us that both cannot be equal, so they cannot be 0.
Now a<b, so b=|a|, that is, a is negative and b is positive...
a<0 and b>0, but nothing about c.
Combined..
a<0, but ac=0 tells us that c=0, so a<c
C
(1) (a)(c) = 0
This tells us that at least one of the two, a and c, is 0..
(2) a + b = 0
a=-b, and a<b tells us that both cannot be equal, so they cannot be 0.
Now a<b, so b=|a|, that is, a is negative and b is positive...
a<0 and b>0, but nothing about c.
Combined..
a<0, but ac=0 tells us that c=0, so a<c
C
11 Oct 2019, 21:29
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EMPOWERgmatRichC
(1) a x c = 0 which means atleast one of them is zero. Insufficient.
(2) a = -b and also a<b which means a is -ve and b is +ve. No relations between a and c is found. Insufficient
(1)+(2) If a is -ve which means c has to be zero. Sufficient
C is correct.
