Find all School-related info fast with the new School-Specific MBA Forum

It is currently 30 Aug 2014, 08:36

Close

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
Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

What is the 1st term in sequence S? (1) The 3rd term of S is

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
User avatar
Joined: 23 Aug 2003
Posts: 462
Location: In the middle of nowhere
Followers: 1

Kudos [?]: 9 [0], given: 0

GMAT Tests User
What is the 1st term in sequence S? (1) The 3rd term of S is [#permalink] New post 02 Mar 2004, 09:36
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 1 sessions
What is the 1st term in sequence S?
(1) The 3rd term of S is 4.
(2) The 2nd term of S is three times the 1st, and the 3rd term is four times the 2nd.

Vivek.
_________________

"Start By Doing What Is Necessary ,Then What Is Possible & Suddenly You Will Realise That You Are Doing The Impossible"

Senior Manager
Senior Manager
avatar
Joined: 30 Aug 2003
Posts: 325
Location: dallas , tx
Followers: 1

Kudos [?]: 4 [0], given: 0

GMAT Tests User
 [#permalink] New post 02 Mar 2004, 09:46
Is the answer C..??
both are needed..
first term is suppose x and 2nd term is 3x and 3rd is 4(3x)=12x
from 1st stemt 12x=4 .. can get the 1st term of seq
_________________

shubhangi

Senior Manager
Senior Manager
User avatar
Joined: 23 Aug 2003
Posts: 462
Location: In the middle of nowhere
Followers: 1

Kudos [?]: 9 [0], given: 0

GMAT Tests User
 [#permalink] New post 04 Mar 2004, 09:54
(1) is no help in finding the first term of S --- INSUFF
For example, the following sequences each have 4 as their third term, yet they have different first terms:

0, 2, 4
-4, 0, 4

This eliminates choices A and D.
Although (2) contains a lot of information, it also is not sufficient. For example, the following sequences each satisfy (2),
yet they have different first terms:

1, 3, 12
3, 9, 36

This eliminates B.
Next, we consider (1) and (2) together. From (1), we know "the 3rd term of S is 4." From (2), we know "the 3rd term is four times the 2nd." This is equivalent to saying the 2nd term is 1/4 the 3rd term: (1/4)4 = 1. Further, from (2), we know "the 2nd term is three times the 1st." This is equivalent to saying the 1st term is 1/3 the 2nd term: (1/3)1 = 1/3. Hence, the first term of the sequence is fully determined: 1/3, 1, 4.
The answer is C.

Vivek.
_________________

"Start By Doing What Is Necessary ,Then What Is Possible & Suddenly You Will Realise That You Are Doing The Impossible"

  [#permalink] 04 Mar 2004, 09:54
    Similar topics Author Replies Last post
Similar
Topics:
11 Experts publish their posts in the topic In a certain sequence, each term, starting with the 3rd term mun23 8 27 Mar 2013, 21:53
1st Attempt - 660 2nd - 640 3rd - 630 - What next? Merfolk17 1 18 Nov 2011, 13:38
The first 3 terms of a sequence are 2, 7, 22. After the 1st r019h 2 09 Jul 2007, 18:49
If the terms of a sequence are t1, t2, t3, t n , what is the positive soul 3 26 Sep 2006, 18:03
What is the sixtieth term in the following sequence? 1, 2, willget800 6 25 Apr 2006, 18:04
Display posts from previous: Sort by

What is the 1st term in sequence S? (1) The 3rd term of S is

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.