It is currently 23 Nov 2017, 21:10

### 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

# In a sequence of terms in which each term is three times the

Author Message
TAGS:

### Hide Tags

Manager
Affiliations: CFA Level 2 Candidate
Joined: 29 Jun 2009
Posts: 218

Kudos [?]: 292 [0], given: 2

Schools: RD 2: Darden Class of 2012
In a sequence of terms in which each term is three times the [#permalink]

### Show Tags

13 Oct 2009, 06:36
1
This post was
BOOKMARKED
00:00

Difficulty:

25% (medium)

Question Stats:

65% (00:42) correct 35% (00:30) wrong based on 100 sessions

### HideShow timer Statistics

In a sequence of terms in which each term is three times the previous term, what is the fourth term?

(1) The first term is 3.

(2) The second-to-last term is 3^10.

OPEN DISCUSSION OF THIS QUESTION IS HERE: in-a-sequence-of-terms-in-which-each-term-is-three-times-the-109374.html
[Reveal] Spoiler: OA

Last edited by Bunuel on 18 Dec 2013, 10:20, edited 2 times in total.

Kudos [?]: 292 [0], given: 2

Manager
Joined: 12 Oct 2009
Posts: 113

Kudos [?]: 71 [0], given: 3

Re: Tuesday Q1 - Fourth Term [#permalink]

### Show Tags

13 Oct 2009, 07:00
hogann wrote:
In a sequence of terms in which each term is three times the previous term, what is the fourth term?

(1) The first term is 3.

(2) The second-to-last term is 310.

If the 1st term is 3 then 2nd term will be 3*3 = 9 , 3rd term = 9*3 and 4th term is 9*3*3
so A is suf

310 is second to last but w/o the first term we cannot determine the number of terms hence B is insuf

Kudos [?]: 71 [0], given: 3

Current Student
Joined: 06 Sep 2013
Posts: 1970

Kudos [?]: 745 [0], given: 355

Concentration: Finance
Re: In a sequence of terms in which each term is three times the [#permalink]

### Show Tags

18 Dec 2013, 09:42
hogann wrote:
In a sequence of terms in which each term is three times the previous term, what is the fourth term?

(1) The first term is 3.

(2) The second-to-last term is 3^10.

Cheers
J

Kudos [?]: 745 [0], given: 355

Math Expert
Joined: 02 Sep 2009
Posts: 42341

Kudos [?]: 133163 [0], given: 12416

Re: In a sequence of terms in which each term is three times the [#permalink]

### Show Tags

18 Dec 2013, 10:21
In a sequence of terms in which each term is three times the previous term, what is the fourth term?

(1) The first term is 3 --> sequence is: 3, 9, 27, 81, ... so the fourth term is 81. Sufficient.

(2) The second-to-last term is 3^10 --> since we don't know how many terms are there in the sequence then we don't know which term is second-to-last. For example: if it's third term then fourth (and last) will be 3^11, if it's fifth term then the fourth term is 3^9, ... Not sufficient.

OPEN DISCUSSION OF THIS QUESTION IS HERE: in-a-sequence-of-terms-in-which-each-term-is-three-times-the-109374.html
_________________

Kudos [?]: 133163 [0], given: 12416

Re: In a sequence of terms in which each term is three times the   [#permalink] 18 Dec 2013, 10:21
Display posts from previous: Sort by