• e-gmat Exclusive Offer
    Get 300+ Practice Questions
    25 Video lessons and 6 Webinars for FREE

    Available with Beat the GMAT members only code

    MORE DETAILS
    e-gmat Exclusive Offer
  • Varsity Tutors
    Award-winning private GMAT tutoring
    Register now and save up to $200

    Available with Beat the GMAT members only code

    MORE DETAILS
    Varsity Tutors
  • The Princeton Review
    FREE GMAT Exam
    Know how you'd score today for $0

    Available with Beat the GMAT members only code

    MORE DETAILS
    The Princeton Review
  • Veritas Prep
    Free Veritas GMAT Class
    Experience Lesson 1 Live Free

    Available with Beat the GMAT members only code

    MORE DETAILS
    Veritas Prep
  • PrepScholar GMAT
    5 Day FREE Trial
    Study Smarter, Not Harder

    Available with Beat the GMAT members only code

    MORE DETAILS
    PrepScholar GMAT
  • Magoosh
    Magoosh
    Study with Magoosh GMAT prep

    Available with Beat the GMAT members only code

    MORE DETAILS
    Magoosh
  • Target Test Prep
    5-Day Free Trial
    5-day free, full-access trial TTP Quant

    Available with Beat the GMAT members only code

    MORE DETAILS
    Target Test Prep
  • EMPOWERgmat Slider
    1 Hour Free
    BEAT THE GMAT EXCLUSIVE

    Available with Beat the GMAT members only code

    MORE DETAILS
    EMPOWERgmat Slider
  • Economist Test Prep
    Free Trial & Practice Exam
    BEAT THE GMAT EXCLUSIVE

    Available with Beat the GMAT members only code

    MORE DETAILS
    Economist Test Prep
  • Kaplan Test Prep
    Free Practice Test & Review
    How would you score if you took the GMAT

    Available with Beat the GMAT members only code

    MORE DETAILS
    Kaplan Test Prep

what is the value of m?

This topic has 1 expert reply and 0 member replies

what is the value of m?

Post Sat Feb 24, 2018 3:15 am
m=?

1) 5 is a factor of m
2) m is a prime number

The OA is C.

Why is C the correct answer? I got confused.

  • +1 Upvote Post
  • Quote
  • Flag

GMAT/MBA Expert

Top Reply
Post Sat Feb 24, 2018 11:05 am
VJesus12 wrote:
m=?

1) 5 is a factor of m
2) m is a prime number
Target question: What is the value of m?

Statement 1: 5 is a factor of m
There are several values of m that satisfy statement 1. Here are two:
Case a: m = 5
Case b: m = 10
Since we cannot answer the target question with certainty, statement 1 is NOT SUFFICIENT

Statement 2: m is a prime number
There are several values of m that satisfy statement 2: m = 2, m = 3, m = 5, m = 7, m = 11, etc
Since we cannot answer the target question with certainty, statement 2 is NOT SUFFICIENT

Statements 1 and 2 combined
Statement 2 tells us that m is a prime number. This means that m has EXACTLY 2 factors: 1 and m
Statement 1 tells us that 5 is a factor of m
This means that m MUST equal 5
Since we can answer the target question with certainty, the combined statements are SUFFICIENT

Answer: C

Cheers,
Brent

_________________
Brent Hanneson – Creator of GMATPrepNow.com
Use our video course along with Beat The GMAT's free 60-Day Study Guide

Check out the online reviews of our course
Come see all of our free resources

  • +1 Upvote Post
  • Quote
  • Flag
GMAT Prep Now's comprehensive video course can be used in conjunction with Beat The GMAT’s FREE 60-Day Study Guide and reach your target score in 2 months!

Top First Responders*

1 GMATGuruNY 108 first replies
2 Brent@GMATPrepNow 41 first replies
3 Rich.C@EMPOWERgma... 35 first replies
4 Jay@ManhattanReview 25 first replies
5 Scott@TargetTestPrep 11 first replies
* Only counts replies to topics started in last 30 days
See More Top Beat The GMAT Members

Most Active Experts

1 image description GMATGuruNY

The Princeton Review Teacher

154 posts
2 image description Brent@GMATPrepNow

GMAT Prep Now Teacher

129 posts
3 image description Scott@TargetTestPrep

Target Test Prep

103 posts
4 image description Rich.C@EMPOWERgma...

EMPOWERgmat

81 posts
5 image description Max@Math Revolution

Math Revolution

80 posts
See More Top Beat The GMAT Experts