• NEW! FREE Beat The GMAT Quizzes
Hundreds of Questions Highly Detailed Reporting Expert Explanations
• 7 CATs FREE!
If you earn 100 Forum Points

Engage in the Beat The GMAT forums to earn
100 points for $49 worth of Veritas practice GMATs FREE VERITAS PRACTICE GMAT EXAMS Earn 10 Points Per Post Earn 10 Points Per Thanks Earn 10 Points Per Upvote ## X is the least common multiple of 96,196,300 . . . . tagged by: VJesus12 ##### This topic has 1 expert reply and 0 member replies ### Top Member ## X is the least common multiple of 96,196,300 . . . . ## Timer 00:00 ## Your Answer A B C D E ## Global Stats Difficult X is the least common multiple of 96, 196 and 300. Which number below is not a factor of X? A. 600 B. 700 C. 900 D. 2100 E. 4900 The OA is the option C. How can I know the factors of X? Is there a fast way for solving this PS question? I'd appreciate any help. ### GMAT/MBA Expert GMAT Instructor Joined 25 Apr 2015 Posted: 2624 messages Followed by: 18 members Upvotes: 43 Top Reply VJesus12 wrote: X is the least common multiple of 96, 196 and 300. Which number below is not a factor of X? A. 600 B. 700 C. 900 D. 2100 E. 4900 Breaking each number into primes, we have: 96 = 32 x 3 = 2^5 x 3^1 196 = 4 x 49 = 2^2 x 7^2 300 = 3 x 100 = 3^1 x 2^2 x 5^2 The LCM is 2^5 x 3^1 x 5^2 x 7^2 Since 900 = 3^2 x 100, we see that 900 cannot be a factor of X. Answer: C _________________ Scott Woodbury-Stewart Founder and CEO scott@targettestprep.com See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews • Magoosh Study with Magoosh GMAT prep Available with Beat the GMAT members only code • Free Practice Test & Review How would you score if you took the GMAT Available with Beat the GMAT members only code • Free Trial & Practice Exam BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Award-winning private GMAT tutoring Register now and save up to$200

Available with Beat the GMAT members only code

• 5-Day Free Trial
5-day free, full-access trial TTP Quant

Available with Beat the GMAT members only code

• 5 Day FREE Trial
Study Smarter, Not Harder

Available with Beat the GMAT members only code

• FREE GMAT Exam
Know how you'd score today for \$0

Available with Beat the GMAT members only code

• 1 Hour Free
BEAT THE GMAT EXCLUSIVE

Available with Beat the GMAT members only code

• Get 300+ Practice Questions
25 Video lessons and 6 Webinars for FREE

Available with Beat the GMAT members only code

• Free Veritas GMAT Class
Experience Lesson 1 Live Free

Available with Beat the GMAT members only code

### Top First Responders*

1 Ian Stewart 64 first replies
2 Jay@ManhattanReview 53 first replies
3 Brent@GMATPrepNow 52 first replies
4 GMATGuruNY 28 first replies
5 Scott@TargetTestPrep 19 first replies
* Only counts replies to topics started in last 30 days
See More Top Beat The GMAT Members

### Most Active Experts

1 Scott@TargetTestPrep

Target Test Prep

200 posts
2 Max@Math Revolution

Math Revolution

93 posts
3 Brent@GMATPrepNow

GMAT Prep Now Teacher

90 posts
4 Ian Stewart

GMATiX Teacher

71 posts
5 Rich.C@EMPOWERgma...

EMPOWERgmat

68 posts
See More Top Beat The GMAT Experts