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
GMATLiveTeach 7 seats left
Chris Peckover
NEXT LIVE COHORT

Oct 13 to Jan 7, 2027

with Chris Peckover

Schedule
Tue, Thu · 8:00 to 10:00 PM ET
Included
40 live hours + 6 months of GMAT OnDemand
  • Live instruction and real-time questions
  • Class recordings and assigned practice
View class & 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
Start free 5-day trial
Read 559 reviewsTarget Test Prep

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

Number System

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Master | Next Rank: 500 Posts
Posts: 167
Joined: Fri Mar 09, 2012 8:35 pmFollowed by: 3 members
Thanked: 39 times
by adthedaddy » Thu Sep 24, 2015 7:29 pm
If q is positive two-digit integer and p is the units digit of q, is 10<q<50 ?

1. p is more than the tens digit of q.
2. 4p-1 = q

Standard DS options follow
"Your time is limited, so don't waste it living someone else's life. Don't be trapped by dogma - which is living with the results of other people's thinking. Don't let the noise of others' opinions drown out your own inner voice. And most important, have the courage to follow your heart and intuition. They somehow already know what you truly want to become. Everything else is secondary" - Steve Jobs
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |
Newbie | Next Rank: 10 Posts
Posts: 1
Joined: Thu Sep 24, 2015 9:16 pm
Thanked: 1 times

by swa_mac » Thu Sep 24, 2015 9:35 pm
IMO: B

1. Insufficient: since the number can be 12 or 89 or 56; Since the units digit is larger than the Units digit.
2. Sufficient: 4p-1= q; given
but we know that q= 10x+p
hence equating two, we have; 4p-1=10x+p; p= {10x+1}/3;
hence q= {40x+1}/3 and X can take values from 1 till 9
Hence substituting 1 we have 41 which is not divisible by 3
Substituting 2 we have 81; then q= 27 and we cannot substitute 3 inplace of x as it leads to a 3 digit number.

Hence, B is the sufficient.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
GMAT Instructor
Posts: 2630
Joined: Wed Sep 12, 2012 3:32 pmFollowed by: 119 members
Location: East Bay all the way
Thanked: 625 times
GMAT Score:780

by Matt@VeritasPrep » Fri Sep 25, 2015 12:49 am
S1: Not sufficient, we could have 47 or 89 or many other things.

S2: q + 1 = 4p, so (q + 1) is a multiple of 4. Since p is a single digit integer and q is a two-digit integer, we could have p = 3, 4, 5, ..., 9, and hence q = 11, 15, ..., 35. So whatever q is, it must be between 11 and 35, inclusive; SUFFICIENT.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1