Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 25 May 2017, 01:36

### GMAT 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

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# p,r,s,t,u An arithmetic sequance is a sequence in which each

Author Message
Manager
Joined: 23 Mar 2008
Posts: 218
Followers: 3

Kudos [?]: 156 [0], given: 0

p,r,s,t,u An arithmetic sequance is a sequence in which each [#permalink]

### Show Tags

13 Apr 2008, 11:02
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

p,r,s,t,u

An arithmetic sequance is a sequence in which each term after the first is equal to the sum bof the preceding term and a constant. If the list of numbers shown above is an arithmetic sequence, which of the following must also be an arithmetic sequence?

I. 2p, 2r, 2s, 2t,2u
II. p-3, r-3, s-3, t-3, u-3
III. p^2, r^2, s^2, t^2, u^2

a) I only
b) II only
c) III only
d) I and II only
e) II and III only
Senior Manager
Joined: 28 Feb 2007
Posts: 304
Followers: 1

Kudos [?]: 40 [0], given: 0

### Show Tags

13 Apr 2008, 11:53
B.
AS-arith. sequence.
X- any real number.
AS(1) +/- X = AS(2) (always true).
Manager
Joined: 25 Mar 2008
Posts: 106
Followers: 1

Kudos [?]: 12 [0], given: 0

### Show Tags

13 Apr 2008, 12:14
can u describe in details plsssssssssssss?
Director
Joined: 14 Oct 2007
Posts: 754
Location: Oxford
Schools: Oxford'10
Followers: 16

Kudos [?]: 218 [0], given: 8

### Show Tags

13 Apr 2008, 14:03
let the original sequence be written as below by adding the constant each time

p, p+c, p+2c, p+3c, p+4c

lets transform the above as per our choices

I) 2p, 2p+2c, 2p+4c, 2p+6c, 2p+8c (this is an arithmetic seq. since there is an equal increase of 2c in each term of the sequence)
II) p-3, p+c-3, p+2c-3, p+3c -3, p+4c-3 (this is an arithmetic seq, since there is an equal increase of c in each term)
III) p^2, (p+c)^2, (p+3c)^2.... (just looking at the first 3 terms, the increase isn't constant, since in the second term the increase is 2pc+ c^2 and in the third term the increase is 6pc+9c^2)

puma wrote:
p,r,s,t,u

An arithmetic sequance is a sequence in which each term after the first is equal to the sum bof the preceding term and a constant. If the list of numbers shown above is an arithmetic sequence, which of the following must also be an arithmetic sequence?

I. 2p, 2r, 2s, 2t,2u
II. p-3, r-3, s-3, t-3, u-3
III. p^2, r^2, s^2, t^2, u^2

a) I only
b) II only
c) III only
d) I and II only
e) II and III only
Current Student
Joined: 28 Dec 2004
Posts: 3363
Location: New York City
Schools: Wharton'11 HBS'12
Followers: 15

Kudos [?]: 297 [0], given: 2

### Show Tags

13 Apr 2008, 14:11
I will go with D as welll..

option 3 is a geometric squence..and its sum may not be a sequence..
CEO
Joined: 17 May 2007
Posts: 2959
Followers: 61

Kudos [?]: 601 [0], given: 210

### Show Tags

14 Apr 2008, 22:00
Agree with D - Whats the OA ?
Re: sequence   [#permalink] 14 Apr 2008, 22:00
Display posts from previous: Sort by