Events & Promotions
|
|
GMAT Club Daily Prep
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
May 1212:00 PM EDT
-11:59 PM EDT
Make the most of your break with the most realistic GMAT™ prep. Take up to $700 off select products.
Jun 1006:00 AM PDT
-06:15 PM PDT
Register for the GMAT Club Virtual MBA Spotlight Fair – the world’s premier event for serious MBA candidates. This is your chance to hear directly from Admissions Directors at nearly every Top 30 MBA program..
27 Jun 2009, 22:30
Kudos
Bookmarks
N
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
(N/A)
Question Stats:
0% (00:00) correct
0%
(00:00)
wrong
based on 1
sessions
History
Date
Time
Result
Not Attempted Yet
. Both a, b, and c are 3-digits integers, where a=b+c. Is the hundreds' digit of number a equal to sum of that of b and c?
1). Tens' digit of a=tens' digit of b+tens' digit of c
2). Units' digit of a=units' digit of b + units' digit of c
1). Tens' digit of a=tens' digit of b+tens' digit of c
2). Units' digit of a=units' digit of b + units' digit of c
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
28 Jun 2009, 19:38
Kudos
Bookmarks
C.
Let the number be as follows
a = 100D + 10E + F
b = 100G + 10H + I
c = 100J + 10K + L
As per question
a = b + c
100D + 10E + F = (100G + 10H + I) + (100J + 10K + L)
stmt 1.
E = H + K
Not suff. as the sum of LHS and RHS can be influenced by G,J,I and L.
Stmt. 2
F = I + L
Not suff. due to same reason as for stm. 1.
Combine
100D + 10E + F = 100G + 100J + 10h + 10K + I + L
100D + 10E + F = 100G + 100J + 10(h+k) + F
100D + 10E + F = 100(g+j) + 10E + F
Lookign at the above eq.
100D = 100(G+J)
or d = G+J.
Hence suff.
Pls. tell the OA.
Let the number be as follows
a = 100D + 10E + F
b = 100G + 10H + I
c = 100J + 10K + L
As per question
a = b + c
100D + 10E + F = (100G + 10H + I) + (100J + 10K + L)
stmt 1.
E = H + K
Not suff. as the sum of LHS and RHS can be influenced by G,J,I and L.
Stmt. 2
F = I + L
Not suff. due to same reason as for stm. 1.
Combine
100D + 10E + F = 100G + 100J + 10h + 10K + I + L
100D + 10E + F = 100G + 100J + 10(h+k) + F
100D + 10E + F = 100(g+j) + 10E + F
Lookign at the above eq.
100D = 100(G+J)
or d = G+J.
Hence suff.
Pls. tell the OA.
29 Jun 2009, 12:45
Kudos
Bookmarks
vcbabu
This is basically a problem that asks us to determine whether there were any numbers carried over from the previous units in the addition process.
1 - Not enough. We know if the tens' digits do not add up to 10, then nothing will be carried over. We know the tens' digits of B & C do not add to 10, but we don't know whether anything carried over from the addition of the units' digits, which might in turn push the sum of the tens' digits over 10.
2 - Also not enough for the same reason above. We know the addition of the units' digits won't carry over to the tens, but we don't know anything about the tens' digits.
Combined: Enough, we know neither the units nor the tens will carry over additional numbers, so the sum of the hundreds' digits will not include anything carried over.
