GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
If n is an integer from 1 to 96, what is the probability for n*(n+1)*(
[#permalink]
11 Nov 2022, 05:08
11 Nov 2022, 05:08
Expert Reply
1
Bookmarks
00:00
Question Stats:
33% (03:11) correct
66% (01:58) wrong based on 9 sessions
Hide Show timer Statistics
If n is an integer from 1 to 96, what is the probability for n*(n+1)*(n+2) being divisible by 8?
A. 25%
B. 50%
C. 62.5%
D. 72.5%
E. 75%
A. 25%
B. 50%
C. 62.5%
D. 72.5%
E. 75%
Part of the project: GRE QCQ & PS 3 Questions Every One DAILY Challenge - (2022) - Gain 20 Kudos & Get FREE Access to GRE Prep Club TESTS
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Free Materials for the GRE General Exam - Where to get it!!
GRE Geometry Formulas
GRE - Math Book
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Free Materials for the GRE General Exam - Where to get it!!
GRE Geometry Formulas
GRE - Math Book
GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
If n is an integer from 1 to 96, what is the probability for n*(n+1)*(
[#permalink]
14 Nov 2022, 07:42
14 Nov 2022, 07:42
1
Expert Reply
n(n+1)(n+2) will be divisible by 8 for all even numbers, i.e. total 48 numbers
also cases in which (n+1) is a multiple of 8 will be divisible by 8
for ex: n=7,15,23.. i.e. total 12 numbers
so total number of such cases is 48+12=60
probability = 60/96 = 5/8 = 62.5%
Answer: C
also cases in which (n+1) is a multiple of 8 will be divisible by 8
for ex: n=7,15,23.. i.e. total 12 numbers
so total number of such cases is 48+12=60
probability = 60/96 = 5/8 = 62.5%
Answer: C
gmatclubot
If n is an integer from 1 to 96, what is the probability for n*(n+1)*( [#permalink]
14 Nov 2022, 07:42
Moderators:
