BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Cubes - OG 12th edition - Q # 11

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
User avatar
Master | Next Rank: 500 Posts
Posts: 241
Joined: Wed Jan 27, 2010 10:10 pm
Location: Chennai
Thanked: 23 times
Followed by:2 members
GMAT Score:690

by sars72 » Mon Feb 01, 2010 10:07 am
what seems to be the problem?

cube root of 10^-6 = (10^-6)^(1/3) = (10)^(-6*1/3) = 10^-2
Top
User avatar
Legendary Member
Posts: 1275
Joined: Thu Sep 21, 2006 11:13 pm
Location: Arabian Sea
Thanked: 125 times
Followed by:2 members

by ajith » Mon Feb 01, 2010 10:16 am
bhumika.k.shah wrote:how did u get cube root of 10 ^ -6 as 10^-2 ?????
10^-6 = 1/1000000 = 1/10*1/10*1/10*1/10*1/10*1/10

cube root of a*a*a*a*a*a = a*a

cube root of 10^-6 = 1/10*1/10 = 1/10^2 = 10^-2
Always borrow money from a pessimist, he doesn't expect to be paid back.
Top
User avatar
Legendary Member
Posts: 1560
Joined: Tue Nov 17, 2009 2:38 am
Thanked: 137 times
Followed by:5 members

by thephoenix » Mon Feb 01, 2010 10:17 am
sqrt(cube root(.000064))

.000064=64*10^-6=4^3*10^-6
taking cube root bth side=4*10^-2
taking sqrt 2*10^-1=2/10=0.2

cube root of 10^-6=[10]^(-6/3)=10^-2
hth
Top
Post new topic Post Reply
• Page 1 of 1