• EMPOWERgmat Slider
    1 Hour Free
    BEAT THE GMAT EXCLUSIVE

    Available with Beat the GMAT members only code

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

    Available with Beat the GMAT members only code

    MORE DETAILS
    Economist Test Prep
  • 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
  • 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
  • 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

OG product of fractions and neg exponents Q

This topic has 2 expert replies and 0 member replies
AbeNeedsAnswers Master | Next Rank: 500 Posts Default Avatar
Joined
02 Jul 2017
Posted:
191 messages
Followed by:
2 members
Thanked:
1 times

OG product of fractions and neg exponents Q

Post Tue Jul 25, 2017 7:43 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    (1/2)^(-3)*(1/4)^(-2)*(1/16)^(-1) = ?

    A. 1/2^(-48)
    B. 1/2^(-11)
    C. 1/2^(-6)
    D. 1/8^(-11)
    E. 1/8^(-6)

    B

    Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums!
    Post Tue Jul 25, 2017 7:54 pm
    AbeNeedsAnswers wrote:
    (1/2)^(-3)*(1/4)^(-2)*(1/16)^(-1) = ?

    A. 1/2^(-48)
    B. 1/2^(-11)
    C. 1/2^(-6)
    D. 1/8^(-11)
    E. 1/8^(-6)

    B
    NOTE:
    1/4 = (1/2)^2
    1/16 = (1/2)^4
    So, (1/2)^(-3) x (1/4)^(-2) x (1/16)^(-1) = (1/2)^(-3) x ((1/2)^2)^(-2) x ((1/2)^4)^(-1)
    = (1/2)^(-3) x (1/2)^(-4) x (1/2)^(-4)
    = (1/2)^-11

    Answer: B

    _________________
    Brent Hanneson – Founder 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

    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!

    GMAT/MBA Expert

    Post Mon Aug 14, 2017 2:09 pm
    AbeNeedsAnswers wrote:
    (1/2)^(-3)*(1/4)^(-2)*(1/16)^(-1) = ?

    A. 1/2^(-48)
    B. 1/2^(-11)
    C. 1/2^(-6)
    D. 1/8^(-11)
    E. 1/8^(-6)

    B
    Let’s simplify the given expression by making all factors have the same base:

    (1/2)^(-3) * (1/4)^(-2) * (1/16)^(-1)

    (1/2)^(-3) * (1/2)^((2)(-2)) * (1/2)^((4)(-1))

    (1/2)^(-3) * (1/2)^(-4) * (1/2)^(-4)

    (1/2)^(-3 - 4 - 4) = (1/2)^-11

    Answer: B

    _________________

    Scott Woodbury Stewart Founder & CEO
    GMAT Quant Self-Study Course - 500+ lessons 3000+ practice problems 800+ HD solutions
    5-Day Free Trial 5-DAY FREE, FULL-ACCESS TRIAL TTP QUANT

    Best Conversation Starters

    1 lheiannie07 107 topics
    2 ardz24 64 topics
    3 LUANDATO 62 topics
    4 swerve 60 topics
    5 AAPL 57 topics
    See More Top Beat The GMAT Members...

    Most Active Experts

    1 image description Brent@GMATPrepNow

    GMAT Prep Now Teacher

    166 posts
    2 image description EconomistGMATTutor

    The Economist GMAT Tutor

    135 posts
    3 image description GMATGuruNY

    The Princeton Review Teacher

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

    EMPOWERgmat

    123 posts
    5 image description Scott@TargetTestPrep

    Target Test Prep

    118 posts
    See More Top Beat The GMAT Experts