GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 18 Oct 2018, 21:50

### 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

# If sequence S has 250 terms, what is the 243rd term of S ?

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 50000
If sequence S has 250 terms, what is the 243rd term of S ?  [#permalink]

### Show Tags

20 Nov 2017, 00:13
00:00

Difficulty:

5% (low)

Question Stats:

93% (00:37) correct 8% (00:33) wrong based on 73 sessions

### HideShow timer Statistics

If sequence S has 250 terms, what is the 243rd term of S ?

(1) The 242nd term of S is -494.

(2) The first term of S is-12, and each term of S after the first term is 2 less than the preceding term.

_________________
Manager
Joined: 05 Dec 2016
Posts: 246
Concentration: Strategy, Finance
GMAT 1: 620 Q46 V29
Re: If sequence S has 250 terms, what is the 243rd term of S ?  [#permalink]

### Show Tags

20 Nov 2017, 00:28
(1) We don't know the increment, so cannot find 243d term
(2) We know the value of the first term and the increment, so we can find out the value of 243d term
S243= -12 - 2*242= -12-484 = -496
Senior Manager
Joined: 31 Jul 2017
Posts: 477
Location: Malaysia
Schools: INSEAD Jan '19
GMAT 1: 700 Q50 V33
GPA: 3.95
WE: Consulting (Energy and Utilities)
Re: If sequence S has 250 terms, what is the 243rd term of S ?  [#permalink]

### Show Tags

20 Nov 2017, 00:33
Bunuel wrote:
If sequence S has 250 terms, what is the 243rd term of S ?

(1) The 242nd term of S is -494.

(2) The first term of S is-12, and each term of S after the first term is 2 less than the preceding term.

nth term of an AP series is given by Tn = a + (n-1)d

here, a = -12, d = -2

T 243 = -496. So, B is sufficient.
_________________

If my Post helps you in Gaining Knowledge, Help me with KUDOS.. !!

Intern
Joined: 30 Sep 2017
Posts: 39
Location: India
Concentration: Entrepreneurship, General Management
Schools: IIM Udaipur '17
GMAT 1: 700 Q50 V37
GPA: 3.7
WE: Engineering (Energy and Utilities)
Re: If sequence S has 250 terms, what is the 243rd term of S ?  [#permalink]

### Show Tags

20 Nov 2017, 10:23
Nice Explanation...

rahul16singh28 wrote:
Bunuel wrote:
If sequence S has 250 terms, what is the 243rd term of S ?

(1) The 242nd term of S is -494.

(2) The first term of S is-12, and each term of S after the first term is 2 less than the preceding term.

nth term of an AP series is given by Tn = a + (n-1)d

here, a = -12, d = -2

T 243 = -496. So, B is sufficient.

_________________

If you like my post, motivate me by giving kudos...

Re: If sequence S has 250 terms, what is the 243rd term of S ? &nbs [#permalink] 20 Nov 2017, 10:23
Display posts from previous: Sort by

# If sequence S has 250 terms, what is the 243rd term of S ?

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne 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®.