If n is a positive integer and r is the remainder when (n-1)(n-2) is divided by 24,wat is the value of r?
1)2 is not a factor of n
2)3 is not a factor of n
1)2 is not a factor of n
2)3 is not a factor of n
BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course
Redeem
Featured Course
Target Test Prep GMAT OnDemand
Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.
- 715+ score guarantee — highest in the industry (99th percentile)
- 52 chapters · 1,500+ lessons · 4,000+ practice questions
- 400 hours of video · 1,500+ instructor-led HD smartboard lessons
- 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
- 24/7 live support + weekly Zoom office hours with GMAT instructors
- TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
- 1,200+ flashcards + AI-powered study assistant & daily calendar
- OnDemand, LiveTeach & GMAT Bootcamp formats available
- Also: GRE, SAT Math & Executive Assessment courses
- MBA Admissions Consulting now available
- 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
- 200,000+ students served
- 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★
5.0
(559 reviews)
130-pt guarantee
$0 to start
then $127/mo
remainder ??
Source: Beat The GMAT — Data Sufficiency |
According to conditions in C, n =5,,7,11,13......
if n=5, then (5-1)(5-2) / 24 , r= 12
if n=7 then (6)(5) /24 , r =6
if n=11 then (10)(9) / 24 r=18
I dont think C can be the ans
if n=5, then (5-1)(5-2) / 24 , r= 12
if n=7 then (6)(5) /24 , r =6
if n=11 then (10)(9) / 24 r=18
I dont think C can be the ans
Hi Tejaswini,
The question u've posted is wrong ...it actually shld say '.....r is a remainder when (n-1)(n+1) is divided by 24....'.
That way you'll get the answer 'c', if u apply plug in in solution posted by reachac.
The question u've posted is wrong ...it actually shld say '.....r is a remainder when (n-1)(n+1) is divided by 24....'.
That way you'll get the answer 'c', if u apply plug in in solution posted by reachac.
