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 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.
20 Apr 2017, 23:45
Kudos
Bookmarks
D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
80% (01:15) correct
20%
(01:00)
wrong
based on 175
sessions
History
Date
Time
Result
Not Attempted Yet
Which number is divisible by 2, 3, 4, and 6 but is not divisible by 5?
A. 138
B. 644
C. 1,020
D. 1,428
E. 4,620
A. 138
B. 644
C. 1,020
D. 1,428
E. 4,620
21 Apr 2017, 01:23
Kudos
Bookmarks
Which number is divisible by 2, 3, 4, and 6 but is not divisible by 5?
A. 138 (Eliminated as this no. is not divisible by 4)
B. 644 (Eliminated as this number is not divisible by 3)
C. 1,020
D. 1,428 (Only this no. out the three remaining nos. is not divisible by 5 as it ends in 8)
E. 4,620
A. 138 (Eliminated as this no. is not divisible by 4)
B. 644 (Eliminated as this number is not divisible by 3)
C. 1,020
D. 1,428 (Only this no. out the three remaining nos. is not divisible by 5 as it ends in 8)
E. 4,620
12 Dec 2019, 14:33
Kudos
Bookmarks
Hi All,
We're asked which number is divisible by 2, 3, 4, and 6 but is NOT divisible by 5. This question is built around several 'rules of division' patterns - and if you know those patterns, then you can use some 'math shortcuts' on this question and save some calculation time.
To start, we're looking for a number that is NOT divisible by 5.... so if a number 'ends' in a 0 or 5, then we can eliminate it. Eliminate Answers C and E.
Next, any number that is divisible by 4 is ALSO divisible by 2.... and any number that is divisible by 6 is ALSO divisible by 2 and 3. This ultimately means that we need to check 3 of the answers (Answers A, B and D) and find the one that is divisible by both 4 and 6...
Answer A: 138/4 = 34.5.... not evenly divisible by 4. Eliminate Answer A
Answer B: 644/4 = 161...... 644/6 = 107.333.... not evenly divisible by 6. Eliminate Answer B
You might also recognize that you can use the "rule of 3" to eliminate Answer B. The digits of 644.... 6, 4 and 4 add up to 6+4+4 = 14. Since 14 is NOT divisible by 3, 644 is NOT divisible by 3 either.
There's only one answer left...
Final Answer:
GMAT assassins aren't born, they're made,
Rich
We're asked which number is divisible by 2, 3, 4, and 6 but is NOT divisible by 5. This question is built around several 'rules of division' patterns - and if you know those patterns, then you can use some 'math shortcuts' on this question and save some calculation time.
To start, we're looking for a number that is NOT divisible by 5.... so if a number 'ends' in a 0 or 5, then we can eliminate it. Eliminate Answers C and E.
Next, any number that is divisible by 4 is ALSO divisible by 2.... and any number that is divisible by 6 is ALSO divisible by 2 and 3. This ultimately means that we need to check 3 of the answers (Answers A, B and D) and find the one that is divisible by both 4 and 6...
Answer A: 138/4 = 34.5.... not evenly divisible by 4. Eliminate Answer A
Answer B: 644/4 = 161...... 644/6 = 107.333.... not evenly divisible by 6. Eliminate Answer B
You might also recognize that you can use the "rule of 3" to eliminate Answer B. The digits of 644.... 6, 4 and 4 add up to 6+4+4 = 14. Since 14 is NOT divisible by 3, 644 is NOT divisible by 3 either.
There's only one answer left...
Final Answer:
GMAT assassins aren't born, they're made,
Rich
