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.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 350,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

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]
08 Apr 2012, 13:32

1

This post received KUDOS

Expert's post

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]
13 Apr 2012, 21:58

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]
10 Dec 2012, 01:51

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]
10 Dec 2012, 01:58

Expert's post

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]
10 Dec 2012, 03:42

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]
10 Dec 2012, 03:45

Expert's post

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).

Re: If A, B and C are digits and AB#0, what is the value of B? [#permalink]
12 May 2014, 17:51

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email. _________________

Back to hometown after a short trip to New Delhi for my visa appointment. Whoever tells you that the toughest part gets over once you get an admit is...