Live GMAT classes with Target Test Prep start Nov 21 and Nov 22. First class free.

See classes
Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

Newsweek Readers’ Choice Awards 2026 winner: Target Test Prep, #1 Test Prep

Target Test Prep was voted #1 Best Test Prep in the 2026 Newsweek Readers’ Choice™ Awards.

★★★★★5.0563 reviews
GMATLiveTeachStarts Nov 22
Josh Braslow, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 22 · Josh Braslow
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemandStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemandStart anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 563 reviewsTarget Test Prep

Math Question

Problem Solving — algebra and arithmetic
Expert replies
Post new topic Post Reply
Subscribe topic
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 79
Joined: Wed Jan 07, 2009 8:45 am
Thanked: 1 times
by Sprite_TM » Fri Jan 09, 2009 7:16 pm
okay,

can someone tell me an easy way to find the hundredth digit in (321)^4 without doing crazy calculations?
Top
Join the discussion
Source: — Quantitative Reasoning |
User avatar
Legendary Member
Posts: 2134
Joined: Mon Oct 20, 2008 11:26 pmFollowed by: 25 members
Thanked: 237 times
GMAT Score:730

Re: Math Question

by logitech » Fri Jan 09, 2009 7:45 pm
Sprite_TM wrote:okay,

can someone tell me an easy way to find the hundredth digit in (321)^4 without doing crazy calculations?
321 x 321 = blablabla 41

blablabla 41 x blablabla 41 = will have 1 in the unit digit because of 1x1 and there will not number carried to 4+4 so 8

you can check it with 21 if you want

21x21 = 441

441 x 441 = 194481
LGTCH
---------------------
"DON'T LET ANYONE STEAL YOUR DREAM!"
Top
Join the discussion
Senior | Next Rank: 100 Posts
Posts: 57
Joined: Sun Jul 06, 2008 10:52 am
Thanked: 1 times
GMAT Score:640

Re: Math Question

by iikarthik » Mon Jan 12, 2009 9:25 pm
logitech wrote:
Sprite_TM wrote:okay,

can someone tell me an easy way to find the hundredth digit in (321)^4 without doing crazy calculations?
321 x 321 = blablabla 41

blablabla 41 x blablabla 41 = will have 1 in the unit digit because of 1x1 and there will not number carried to 4+4 so 8

you can check it with 21 if you want

21x21 = 441

441 x 441 = 194481
Hi Correct me if i am wrong.

The question asks for the hundredth digit,which should be the third one from right
Top
Join the discussion
User avatar
Master | Next Rank: 500 Posts
Posts: 226
Joined: Tue Jan 13, 2009 1:27 pmFollowed by: 1 member
Thanked: 23 times

by awesomeusername » Tue Jan 13, 2009 1:35 pm
If my mind serves me correctly, the hundredth digit is on the right side of the decimal. So in 123.456, the hundredth digit is 5. The hundreds is 1. So the hundredth digit in your question would be 0.
Top
Join the discussion
User avatar
Legendary Member
Posts: 2134
Joined: Mon Oct 20, 2008 11:26 pmFollowed by: 25 members
Thanked: 237 times
GMAT Score:730

by logitech » Tue Jan 13, 2009 5:28 pm
you guys are right.

It should be Hundreds
LGTCH
---------------------
"DON'T LET ANYONE STEAL YOUR DREAM!"
Top
Join the discussion