|
|
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.
19 Jun 2023, 06:00
Kudos
Bookmarks
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
61% (00:59) correct
39%
(00:53)
wrong
based on 72
sessions
History
Date
Time
Result
Not Attempted Yet
When n and k are positive integers, what is the greatest common divisor of n + k and n?
(1) n = 2
(2) k = 1
(1) n = 2
(2) k = 1
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
For relevant Data Sufficiency questions, please check the Data Sufficiency forum:
Data Sufficiency Forum
Data Sufficiency Forum
19 Jun 2023, 06:58
Kudos
Bookmarks
1) 2+k, 2
If k=4, gcf is 2
If k=1, gcf is 1.
NS.
2) n+1, n
Important property: two consecutive integers have no common factors, so their gfc is automatically 1 (ex: 2,3 and 45,46)
So the gcf will always be 1. Suff.
B
Posted from my mobile device
If k=4, gcf is 2
If k=1, gcf is 1.
NS.
2) n+1, n
Important property: two consecutive integers have no common factors, so their gfc is automatically 1 (ex: 2,3 and 45,46)
So the gcf will always be 1. Suff.
B
Posted from my mobile device
19 Jun 2023, 08:52
Kudos
Bookmarks
given that n & k are +ve intgers
GCF of n+k & n
#1
n=2
k can be any value insufficient
#2
k=1
so n+k & n are co prime numbers and GCF is 1
sufficient
option B
GCF of n+k & n
#1
n=2
k can be any value insufficient
#2
k=1
so n+k & n are co prime numbers and GCF is 1
sufficient
option B
Bunuel
