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.
Apr 2301:30 AM EDT
-02:30 AM EDT
Struggling with GMAT Verbal as a non-native speaker? Harsh improved his score from 595 to 695 in just 45 days—and scored a 99 %ile in Verbal (V88)! Learn how smart strategy, clarity, and guided prep helped him gain 100 points.
Apr 2308:00 PM PDT
-09:00 PM PDT
Video explanations + diagnosis of 10 weakest areas + 150+ short videos + study plan!
Apr 2212:30 AM EDT
-01:30 AM EDT
At one point, she believed GMAT wasn’t for her. After scoring 595, self-doubt crept in and she questioned her potential. But instead of quitting, she made the right strategic changes. The result? A remarkable comeback to 695. Check out how Saakshi did it.
Apr 2610:00 AM EDT
-11:00 AM EDT
The Target Test Prep course represents a quantum leap forward in GMAT preparation, a radical reinterpretation of the way that students should study. Try before you buy with a 5-day, full-access trial of the course for FREE!
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
12 Apr 2019, 22:06
Kudos
Bookmarks
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
50% (02:02) correct
50%
(02:08)
wrong
based on 90
sessions
History
Date
Time
Result
Not Attempted Yet
XY and YX represent 2-digit numbers. What is the value of X × Y?
(1) XY – YX = 9
(2) XY + YX = 187
(1) XY – YX = 9
(2) XY + YX = 187
globaldesi
Joined: 28 Jul 2016
Last visit: 23 Feb 2026
Posts: 1,141
Given Kudos: 67
Location: India
Concentration: Finance, Human Resources
Schools: ISB '18 (D)
GPA: 3.97
WE:Project Management (Finance: Investment Banking)
Products:
12 Apr 2019, 22:17
Kudos
Bookmarks
(1) XY – YX = 9
Using statement 1
10x+y-10y-x= 9
9(x-y)= 9
x-y =1
Any values of x and y will satisfy hence not sufficient
(2) XY + YX = 187
10x+y+10y+x= 187
11(x+y)= 187
x+y = 17
only 9 and 8 satisfy the values
thus 9*8 = 72
thus B is sufficient
Hence B
Using statement 1
10x+y-10y-x= 9
9(x-y)= 9
x-y =1
Any values of x and y will satisfy hence not sufficient
(2) XY + YX = 187
10x+y+10y+x= 187
11(x+y)= 187
x+y = 17
only 9 and 8 satisfy the values
thus 9*8 = 72
thus B is sufficient
Hence B
12 Apr 2019, 22:26
Kudos
Bookmarks
XY and YX represent 2-digit numbers. What is the value of X × Y?
This tells us that X and Y are single digits and greater than 0. We can write XY as 10X+Y, and YX as 10Y+X
(1) XY – YX = 9
\(10X+Y-10Y-X=9........9(X-Y)=9......X-Y=1\)
So XY could be 21, 32, 43, and so on
Isuff
(2) XY + YX = 187
\(10X+Y+10Y+X=187........11(X+Y)=187......X+Y=17\)
Now, the only possible values are 8 and 9. If we decrease 8 to 7, 9 will become 10 ans so a 3-digit number..
Hence number could be 89 or 98, but X*Y will remain same, that is 9*8=72
Suff
B
This tells us that X and Y are single digits and greater than 0. We can write XY as 10X+Y, and YX as 10Y+X
(1) XY – YX = 9
\(10X+Y-10Y-X=9........9(X-Y)=9......X-Y=1\)
So XY could be 21, 32, 43, and so on
Isuff
(2) XY + YX = 187
\(10X+Y+10Y+X=187........11(X+Y)=187......X+Y=17\)
Now, the only possible values are 8 and 9. If we decrease 8 to 7, 9 will become 10 ans so a 3-digit number..
Hence number could be 89 or 98, but X*Y will remain same, that is 9*8=72
Suff
B
