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

Redeem

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.

★★★★★5.0559 reviews
GMATBootcamp Starts Sep 28
Chris Peckover, Target Test Prep GMAT expert
LIVE ONLINE BOOTCAMP

Live Online Bootcamp Class with Top GMAT Expert Chris Peckover

15 live classes from Sep 28, 2026

Schedule
Mon to Fri · 7:00 to 10:00 PM ET
Included
Live classes + 6 months of TTP OnDemand
  • Boost your GMAT score in less than one month in a live online class
  • 6 months access to TTP OnDemand video courses included
View bootcamp & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
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
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start 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

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

OG: Factorization

Expert replies
by zacharyz » Sat May 17, 2008 4:00 pm
From OG:

If r and s are positive integers, is r/s an integer?

(1) Every factor of s is also a factor of r
(2) Every prime factor of s is also a prime factor of r

OA is A






I understand the answer for the most part. My question is if there is standard wording to differentiate between simply sharing prime factors and sharing exactly the right number of prime factors for (2).

Ex. if r is 18 and s is 8. In this case, the prime factors of r are 2*3*3. The prime factorization of s is 2*2*2. However the argument is that the wording really specifies that the prime factor of 8 is 2 and the prime factor of 18 is 2 and 3, but 18/8 is not an integer. What would it say to be clear that it did mean the entire prime factorization (meaning that if 8 was s, then r would have to have three 2's in its factorization)?
Join the discussion
Source: — Data Sufficiency |

by luvaduva » Sat May 17, 2008 11:33 pm
This is how I worked the problem when I first saw it.

(1) Infers that r > s or r = s.

If r =12 and s =6
Factors of 12 = 1, 2, 3, 4, 6, and 12
Factors of 6 = 1, 2, 3, and 6
12/6 = 2 => Integer

If r = 12 and s =12
12/12 = 1 => Integer

Sufficient

(2) No inference to whether r > s, r = s, or s > r

If r = 12 and s = 6
Prime Factorization of 12 = 2*2*3
Prime Factorization of 6 = 2*3

The prime factors of 12 are 2 and 3. The prime factors of 6 are 2 and 3.

12/6 = 2 => integer

If r = 6 and s =12
6/12 = .5 => not an integer

Not sufficient

That was my first reaction to the problem, but looking back at it the problem IS a bit ambiguous.
Join the discussion