|
|
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.
08 Sep 2021, 07:30
Kudos
Bookmarks
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
50% (01:05) correct
50%
(01:10)
wrong
based on 270
sessions
History
Date
Time
Result
Not Attempted Yet
If x and y are positive integers, is x a factor of y?
(1) y is a factor of x
(2) x > y
(1) y is a factor of x
(2) x > y
08 Sep 2021, 07:42
Kudos
Bookmarks
Bunuel
Given: x and y are positive integers
Target question: Is x a factor of y?
Statement 1: y is a factor of x
There are several values of x and y that satisfy statement 1. Here are two:
Case a: x = 6 and y = 3. This satisfies a statement 1 because 3 is a factor of 6. In this case, the answer to the target question is NO, x is not a factor of y
Case b: x = 3 and y = 3. This satisfies a statement 1 because 3 is a factor of 3. In this case, the answer to the target question is YES, x is a factor of y
Since we can’t answer the target question with certainty, statement 1 is NOT SUFFICIENT
Statement 2: x > y
Key property: The factors of an integer are always less than or equal to that integer.
So, if x > y, it's impossible that x is a factor of y
The answer to the target question is NO x is not a factor of y
Since we can answer the target question with certainty, statement 2 is SUFFICIENT
Answer: B
Cheers,
Brent
08 Sep 2021, 21:09
Kudos
Bookmarks
Bunuel
Statement 1:
The only way for x and y to be factors of each other is to let x = y. We don't know if that is true. Insufficient.
Statement 2:
Since x is already greater than y, x cannot be a factor of y. Sufficient.
Ans: B
