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

mgmatps3

Expert replies
by stubbornp » Sun Oct 19, 2008 11:53 pm
please explain
You do not have the required permissions to view the files attached to this post.
Join the discussion
Source: — Problem Solving |

by vittalgmat » Mon Oct 20, 2008 12:06 am
Answer is 25 factors.

36^2 = (3^2 * 2^2) ^2
= 3^4 * 2^4

The # of factors is (4+1) * (4+1) = 25.

PS: there is a nice explanation on how to find total # of factors by either Ian or Stuart.

HT Helps
Join the discussion

by stop@800 » Mon Oct 20, 2008 3:35 am
vittalgmat wrote:Answer is 25 factors.

36^2 = (3^2 * 2^2) ^2
= 3^4 * 2^4

The # of factors is (4+1) * (4+1) = 25.

PS: there is a nice explanation on how to find total # of factors by either Ian or Stuart.
vittalgmat, do we have any other explanation also, than one you mentioned?
HT Helps
Join the discussion

by mental » Wed Oct 22, 2008 10:06 am
PS: there is a nice explanation on how to find total # of factors by either Ian or Stuart.

can anyone pls post the link ------
Join the discussion

by jayjk78 » Thu Oct 23, 2008 5:49 pm
Find the primes for 36 (3^2 and 2^)^2 That is 3^4 2^4

Now the primes will be

1, 2,2^2,2^3,2^4,3,3^2,3^3,3^4 =9 primes and combination of (2,2^2,2^3,2^4,3,3^2,3^3,3^4) that is 4*4=16

9+16 = 25
Join the discussion

by Delpaiero » Sat Oct 25, 2008 2:56 am
The explanation of this formula is on a following link. I found it on Google. You guys check it out.

https://mathforum.org/library/drmath/view/57151.html
Join the discussion