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

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

Scoretop 4 - Q9 - Number properties/Probability

Expert replies
by akay » Tue Aug 28, 2007 7:11 pm
I have no clue on this one...

If an integer n is to be chosen at random from the integers 1 to 96, inclusive, what is the probability that n(n+1)(n+2) will be divisible by 8?

A. 1/4
B. 3/8
C. 1/2
D. 5/8
E. 3/4
Join the discussion
Source: — Problem Solving |

by beny » Tue Aug 28, 2007 8:14 pm
These are three consecutive integers. For the product to be divisible by 8, at least two of these integers need to be even (the lowest combination is 2,3,4 and the highest combination is 96,97,98 ). Notice that as long as the first number (n) is even, you will have at least 2 even numbers out of the three, thus, the product is divisible by 8. Now you just need to know how many even integers there are between 1 and 96 inclusive (there are 48... you can either find this using counting methods or just know that the sequence starts odd, ends even, thus exactly half of the numbers must be even).

48/96 = 1/2

Answer is C.
Join the discussion

by givemeanid » Wed Aug 29, 2007 6:04 am
When (n+1) is straight divisible by 8, the product will be divisible by 8 (n will be odd in this case). There are 96/8 = 12 such numbers.

So, total = 48 + 12 = 60 numbers.

Prob = 60/96 = 5/8
So It Goes
Join the discussion