GRE Prep 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.
Retired Moderator
Joined: 19 Nov 2020
Posts: 326
Given Kudos: 64
GRE 1: Q160 V152
The following addition operation shows the sum of the two-digit
[#permalink]
24 Sep 2021, 06:55
24 Sep 2021, 06:55
1
00:00
Question Stats:
35% (02:56) correct
64% (01:32) wrong based on 17 sessions
Hide Show timer Statistics
The following addition operation shows the sum of the two-digit positive integers XY and YX. If X, Y, and Z are different digits, what is the value of the integer Z?
screenshot.126.jpg [ 8.98 KiB | Viewed 1410 times ]
(A) 8
(B) 7
(C) 2
(D) 1
(E) 0
Source: Manhattan Review, GMAT Question Bank
Attachment:
screenshot.126.jpg [ 8.98 KiB | Viewed 1410 times ]
(A) 8
(B) 7
(C) 2
(D) 1
(E) 0
Source: Manhattan Review, GMAT Question Bank
Re: The following addition operation shows the sum of the two-digit
[#permalink]
27 Sep 2021, 11:08
27 Sep 2021, 11:08
1
motion2020 wrote:
The following addition operation shows the sum of the two-digit positive integers XY and YX. If X, Y, and Z are different digits, what is the value of the integer Z?
(A) 8
(B) 7
(C) 2
(D) 1
(E) 0
Attachment:
screenshot.126.jpg
(A) 8
(B) 7
(C) 2
(D) 1
(E) 0
The two digit positive numbers can be written as 10X + Y and 10Y + X, so the addition will result in 11(X + Y). Since the result is divisible by 11. Then for any number divisible by 11, from the result (x + Z - X) should be divisible by 11. which means, the z =0, the only option.
Answer is E) 0
gmatclubot
Re: The following addition operation shows the sum of the two-digit [#permalink]
27 Sep 2021, 11:08
Moderators:
