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.
Jun 0408:30 AM PDT
-09:30 AM PDT
For most test takers, Data Insights is the most challenging section on the GMAT, with test takers scoring several points lower on average on DI than on Quant or Verbal and completing the section with less time to spare.
May 2910:00 AM IST
-11:00 PM IST
Start your journey with a fully customized action plan and work with a dedicated mentor to achieve a 735+ score.- Jun 03
08:30 AM PDT
-09:30 AM PDT
In Episode 7 of our GMAT Ninja CR series, we are rounding up the oddballs, the misfits, and the format-benders: EXCEPT, Fill-In-The-Blanks, and other unusual Critical Reasoning question types. When you see a question that ends with a literal blank line - Jun 10
06:00 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..
04 Nov 2022, 13:13
Kudos
Bookmarks
If \(m\) and \(n\) are positive two-digit integers, what is the value of the tens digit of \(m\) minus the tens digit of \(n\) ?
(1) \(m - n = 42\).
(2) The units digit of \(m\) minus the units digit of \(n\) is not a multiple of 3.
(1) \(m - n = 42\).
(2) The units digit of \(m\) minus the units digit of \(n\) is not a multiple of 3.
04 Nov 2022, 13:13
Kudos
Bookmarks
Official Solution:
If \(m\) and \(n\) are positive two-digit integers, what is the value of the tens digit of \(m\) minus the tens digit of \(n\) ?
Let \(m\) be \(ab\), where \(a\) is the tens digit and \(b\) is the units digit, and \(n\) be \(cd\), where \(c\) is the tens digit and \(d\) is the units digit. The question asks to find the value of \(a - c\).
(1) \(m - n = 42\).
ab
-cd
42
If there is no borrowed 10 from the tens digit of \(m\), so if for example, we have:
54
-12
42
Then, \(a - c=4\).
But if there IS borrowed 10 from the tens digit of \(m\), so if for example, we have:
61
-19
42
Then, \(a - c=5\).
Not sufficient.
(2) The units digit of \(m\) minus the units digit of \(n\) is not a multiple of 3.
This one is clearly insufficient.
(1)+(2) Examples, we considered for the first statement (\(54 - 12\) and \(61 - 19\)) also satisfy the second statement, so even taken together the statements are not sufficient.
Answer: E
If \(m\) and \(n\) are positive two-digit integers, what is the value of the tens digit of \(m\) minus the tens digit of \(n\) ?
Let \(m\) be \(ab\), where \(a\) is the tens digit and \(b\) is the units digit, and \(n\) be \(cd\), where \(c\) is the tens digit and \(d\) is the units digit. The question asks to find the value of \(a - c\).
(1) \(m - n = 42\).
ab
-cd
42
If there is no borrowed 10 from the tens digit of \(m\), so if for example, we have:
54
-12
42
Then, \(a - c=4\).
But if there IS borrowed 10 from the tens digit of \(m\), so if for example, we have:
61
-19
42
Then, \(a - c=5\).
Not sufficient.
(2) The units digit of \(m\) minus the units digit of \(n\) is not a multiple of 3.
This one is clearly insufficient.
(1)+(2) Examples, we considered for the first statement (\(54 - 12\) and \(61 - 19\)) also satisfy the second statement, so even taken together the statements are not sufficient.
Answer: E
23 May 2023, 00:45
Kudos
Bookmarks
That was oversight on my part, didn't get the statement 2 properly.
Bunuel If statement 2 was "units digit of n is not a multiple of 3". Then C would have been correct right?
Bunuel If statement 2 was "units digit of n is not a multiple of 3". Then C would have been correct right?
