Welcome! Check out our free B-School Guides to learn how you compare with other applicants.
Login or Register
 

Solving for exponent.. please help :)

This topic has 1 member reply
Bookmark
Previous Topic Next Topic
maxim730 Rising GMAT Star Default Avatar
Joined
26 Dec 2006
Posted:
76 messages
Followed by:
1 members
Solving for exponent.. please help :) Post Wed Jan 17, 2007 4:59 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    Q: (1/5)^m * (1/4)^18 = 1/ (2*10^35)

    m=?

    Ans is 35

    I have no idea how that was derived.

    Can someone please explain? Thanks


    Source: GMAT Prep

    Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums!
    GMATDUD Rising GMAT Star Default Avatar
    Joined
    16 Jan 2007
    Posted:
    62 messages
    Post Thu Jan 18, 2007 8:48 am
    (1/5)^M = 4^18/2*10^35
    = 2*2^35/2*10^35
    = 2^35/10^35
    = (2/10)^35
    = (1/5)^35

    Hence M = 35.

    Best Conversation Starters
    1 varun289 40 topics
    2 guerrero 21 topics
    3 sana.noor 20 topics
    4 killerdrummer 19 topics
    5 sanaa.rizwan 14 topics
    See More Top Beat The GMAT Members...

    Most Active Experts
    1 image description Brent@GMATPrepNow

    GMAT Prep Now Teacher

    		 203 posts
    2 image description GMATGuruNY

    The Princeton Review Teacher

    		 140 posts
    3 image description Jim@StratusPrep

    Stratus Prep

    		 100 posts
    4 image description Anju@Gurome

    Gurome

    		 99 posts
    5 image description Jon@Admissionado

    Admissionado

    		 49 posts
    See More Top Beat The GMAT Experts