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
we will pick new questions that match your level based on your Timer History
Track Your Progress
every week, we’ll send you an estimated GMAT score based on your performance
Practice Pays
we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
Re: If A B C are digits and AB not equals to 0, what is the val
[#permalink]
Show Tags
08 Apr 2012, 14:32
2
3
babusona wrote:
If A B C are digits and AB not equals to 0, what is the value of B? (1) AB +BA _______________ AAC
(2) A=1
I am confused on the OA. Consider following situations - 82 91 +28 +19 ____ _____ 110 110
Hence, B can be 2 or 1. So (1) is not sufficient.
In your first example A has different values, which cannot happen.
If A, B and C are digits and AB#0, what is the value of B?
(1) AB + BA = AAC --> A=1 (A can not be more than 1, as the sum of 2 two-digit numbers is always less than 200) --> 1B+B1=11C --> B=9 (B can not be less than 8 as 18+81=99, not a three digit number) --> 19+91=110. Sufficient.
Re: If A B C are digits and AB not equals to 0, what is the val
[#permalink]
Show Tags
13 Apr 2012, 22:58
1
Bunuel wrote:
babusona wrote:
If A B C are digits and AB not equals to 0, what is the value of B? (1) AB +BA _______________ AAC
(2) A=1
I am confused on the OA. Consider following situations - 82 91 +28 +19 ____ _____ 110 110
Hence, B can be 2 or 1. So (1) is not sufficient.
In your first example A has different values, which cannot happen.
If A, B and C are digits and AB#0, what is the value of B?
(1) AB + BA = AAC --> A=1 (A can not be more than 1, as the sum of 2 two-digit numbers is always less than 200) --> 1B+B1=11C --> B=9 (B can not be less than 8 as 18+81=99, not a three digit number) --> 19+91=110. Sufficient.
(2) A = 1. Not sufficient.
Answer: A.
Hi what does AB#0 mean? what is the approach to solve such question in Data Sufficiency?
If A,B and C are digits and AB is not 0, what is the value
[#permalink]
Show Tags
10 Dec 2012, 02:51
amitdgr wrote:
If A,B and C are digits and AB is not 0, what is the value of B ?
(1) AB + BA = AAC
(2) A = 1
I think the answer is D.
Statement 1: this statement has already been established as sufficient in the previous posts.
Statement2: A=1
AB +BA ------- AAC
In the above addition, observe the units place: (digit) B + (digit) A = (digit) C Now observe the tens place: (digit) A + (digit) B = (digit) A? -----> this means that a digit has carried over from the addition of the units digits. Now, because a digit has carried over, this implies that the digit A+B is a two digit number----> Now, the only way A+B or (1+B) will be a two digit number is if B = 9.
Re: If A,B and C are digits and AB is not 0, what is the value
[#permalink]
Show Tags
10 Dec 2012, 02:58
geezer0305 wrote:
amitdgr wrote:
If A,B and C are digits and AB is not 0, what is the value of B ?
(1) AB + BA = AAC
(2) A = 1
I think the answer is D.
Statement 1: this statement has already been established as sufficient in the previous posts.
Statement2: A=1
AB +BA ------- AAC
In the above addition, observe the units place: (digit) B + (digit) A = (digit) C Now observe the tens place: (digit) A + (digit) B = (digit) A? -----> this means that a digit has carried over from the addition of the units digits. Now, because a digit has carried over, this implies that the digit A+B is a two digit number----> Now, the only way A+B or (1+B) will be a two digit number is if B = 9.
therefore statement B is sufficient as well.
You cannot use information given in the first statement (AB + BA = AAC) for the second.
Re: If A, B and C are digits and AB#0, what is the value of B?
[#permalink]
Show Tags
10 Dec 2012, 04:42
Ans: The only possibility of getting AA after adding A and B is if A=1 (adding two digits cannot give a number greater than 20). Since the addition of two numbers gives a three-digit number, therefore A+B>equal to 10 , that leaves B to be only 9. Therefore the answer is (D).
_________________
Re: If A, B and C are digits and AB#0, what is the value of B?
[#permalink]
Show Tags
10 Dec 2012, 04:45
priyamne wrote:
Ans: The only possibility of getting AA after adding A and B is if A=1 (adding two digits cannot give a number greater than 20). Since the addition of two numbers gives a three-digit number, therefore A+B>equal to 10 , that leaves B to be only 9. Therefore the answer is (D).
close
58% (01:51) correct 
