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.
The sequence
[#permalink]
22 Sep 2021, 02:43
22 Sep 2021, 02:43
Expert Reply
2
Bookmarks
00:00
Question Stats:
87% (01:35) correct
12% (01:15) wrong based on 33 sessions
Hide Show timer Statistics
The sequence \(a_1,a_2,a_3,…a_n\),… is such that \(a_1=−2,a_2=−5,a_3=4,a_4=3\),and \(a_n=a_{n−4}\) for \(n>4\).
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Source: manhattanreview
Quantity A |
Quantity B |
The sum of the first 64 terms of the sequence |
The sum of the first 98 terms of the sequence |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Source: manhattanreview
Re: The sequence
[#permalink]
24 Sep 2021, 10:50
24 Sep 2021, 10:50
1
Carcass wrote:
The sequence \(a_1,a_2,a_3,…a_n\),… is such that \(a_1=−2,a_2=−5,a_3=4,a_4=3\),and \(a_n=a_{n−4}\) for \(n>4\).
Quantity A |
Quantity B |
The sum of the first 64 terms of the sequence |
The sum of the first 98 terms of the sequence |
Since \(a_n=a_{n−4}\), the values will repeat every 4 numbers as -2,-5,4,3,-2,-5,4,3,-2,-5,4,3,-2,-5,4,3,...
For sum of first 64, find the sum of 4 and multiply by 16 : (-2 -5 + 4 +3) * 16 = 0 * 16 = 0
For sum of first 98, 98 is not a multiple of 4, the reminder of 98/4 is 2, so sum of first 98 will be -2 -5 = -7.
Quantity A is greater.
Re: The sequence
[#permalink]
16 Dec 2025, 08:36
16 Dec 2025, 08:36
Hello from the GRE Prep Club BumpBot!
Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
