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

Redeem
TTP OnDemand GMAT Video Course
Featured Course

Target Test Prep GMAT OnDemand

Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.

  • 715+ score guarantee — highest in the industry (99th percentile)
  • 52 chapters · 1,500+ lessons · 4,000+ practice questions
  • 400 hours of video · 1,500+ instructor-led HD smartboard lessons
  • 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
  • 24/7 live support + weekly Zoom office hours with GMAT instructors
  • TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
  • 1,200+ flashcards + AI-powered study assistant & daily calendar
  • OnDemand, LiveTeach & GMAT Bootcamp formats available
  • Also: GRE, SAT Math & Executive Assessment courses
  • MBA Admissions Consulting now available
  • 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
  • 200,000+ students served
  • 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★ 5.0 (559 reviews)
130-pt guarantee
$0 to start then $127/mo
Start Free 5-Day Trial Read 559 Reviews →

√{(4.8)(10^9)} is closest to which of the following? A.

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Elite Legendary Member
Posts: 3991
Joined: Fri Jul 24, 2015 2:28 amFollowed by: 37 members
Location: Las Vegas, USA
Thanked: 19 times
by Max@Math Revolution » Thu Mar 24, 2016 4:01 pm
√{(4.8)(10^9)} is closest to which of the following?

A. 7,000
B. 70,000
C. 14,000
D. 22,000
E. 220,000


* A solution will be posted in two days.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 16207
Joined: Mon Dec 08, 2008 6:26 pmFollowed by: 1268 members
Location: Vancouver, BC
Thanked: 5254 times
GMAT Score:770

by Brent@GMATPrepNow » Fri Mar 25, 2016 7:15 am
Max@Math Revolution wrote:√{(4.8)(10^9)} is closest to which of the following?

A. 7,000
B. 70,000
C. 14,000
D. 22,000
E. 220,000
We can apply the rule that says: √xy = (√x)(√y)
√{(4.8)(10^9)} = √{(4.8)(10^1)(10^8)}
= √{(48)(10^8)}
= (√48)(√10^8) [applied rule from above]
= (7)(10^4)
= (7)(10,000)
= 70,000

Answer: B

For more on the rule √xy = (√x)(√y), see this free video: https://www.gmatprepnow.com/module/gmat ... video/1037
Brent Hanneson - Creator of GMATPrepNow.com
Image
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Elite Legendary Member
Posts: 3991
Joined: Fri Jul 24, 2015 2:28 amFollowed by: 37 members
Location: Las Vegas, USA
Thanked: 19 times

by Max@Math Revolution » Sun Mar 27, 2016 12:39 am
√{(4.8)(10^9)} is closest to which of the following?

A. 7,000
B. 70,000
C. 14,000
D. 22,000
E. 220,000

-> √{(4.8)(10^9)}=√{(48)(10^8)}=√{(49)(10^8)}=√{(7^2)(10^4)}^2 =(7)(10^4)=70,000.
Therefore, the answer is B.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Elite Legendary Member
Posts: 3991
Joined: Fri Jul 24, 2015 2:28 amFollowed by: 37 members
Location: Las Vegas, USA
Thanked: 19 times

by Max@Math Revolution » Mon Mar 28, 2016 3:53 am
√{(4.8)(10^9)} is closest to which of the following?

A. 7,000
B. 70,000
C. 14,000
D. 22,000
E. 220,000


-> √{(4.8)(10^9)}=√{(48)(10^8)}=√{(49)(10^8)}=√{(7^2)(10^4)^2}=(7)(10^4)=70,000
Thus, the answer is B.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1