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

 It is currently 22 Aug 2019, 00:08 ### 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. ### Request Expert Reply # If T is a list of consecutive integers in increasing order

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

### Hide Tags

Manager  Joined: 18 Oct 2013
Posts: 69
Location: India
Concentration: Technology, Finance
GMAT 1: 580 Q48 V21 GMAT 2: 530 Q49 V13 GMAT 3: 590 Q49 V21 WE: Information Technology (Computer Software)
If T is a list of consecutive integers in increasing order  [#permalink]

### Show Tags

9 00:00

Difficulty:   25% (medium)

Question Stats: 69% (01:16) correct 31% (01:13) wrong based on 210 sessions

### HideShow timer Statistics

If T is a list of consecutive integers in increasing order, what is the sum of integers in T?

(1) The difference between the last integer in T and the first integer in T is 100.
(2) The fourth integer in T is -6

Originally posted by vikrantgulia on 09 Jul 2014, 02:45.
Last edited by Bunuel on 09 Jul 2014, 03:01, edited 1 time in total.
Edited the question.
##### Most Helpful Expert Reply
Math Expert V
Joined: 02 Sep 2009
Posts: 57218
Re: If T is a list of consecutive integers in increasing order  [#permalink]

### Show Tags

3
2
If T is a list of consecutive integers in increasing order, what is the sum of integers in T?

(1) The difference between the last integer in T and the first integer in T is 100. This implies that there are 101 integers in the list. T could be any list of 101 consecutive integers. For example, {0, 1, 2, ..., 100} or {1, 2, 3, ..., 101}. Not sufficient.

(2) The fourth integer in T is -6. This implies that the first integer is -9. We don't know how many integers are there in the list, hence cannot get the sum. Not sufficient.

(1)+(2) We know that the first integer is -9 and that there are total of 101 integers in the list: T = {-9, -8, -7, -6, ..., 91}. We can get the sum. Sufficient.

Answer: C.

Hope it's clear.
_________________
##### General Discussion
Intern  Joined: 07 Jul 2014
Posts: 12
Re: If T is a list of consecutive integers in increasing order  [#permalink]

### Show Tags

1
Banuel you gave the solution on all thread, so a lot of thanks of you...
Manager  Joined: 18 Oct 2013
Posts: 69
Location: India
Concentration: Technology, Finance
GMAT 1: 580 Q48 V21 GMAT 2: 530 Q49 V13 GMAT 3: 590 Q49 V21 WE: Information Technology (Computer Software)
Re: If T is a list of consecutive integers in increasing order  [#permalink]

### Show Tags

1) The difference between any two integer is 100.So,Let first number could be -1,0,or,1 then last number would be 99,100,or 101 and each series give different sum. Hence, Not Sufficient.

2) fourth integer is -6 .so first integer is n+3=-6 i.e -9 but we don't know the number of of terms in T. that sum of 100 terms of sum of 200 terms. Not sufficient

1) and 2) together we know that first integer is -9 and difference of last integer and first integer is 100. So we definitely get a sum.Hence C is the correct answer
Intern  B
Joined: 13 Apr 2018
Posts: 26
Location: Zambia
Concentration: Finance, Real Estate
GPA: 2.98
WE: Analyst (Investment Banking)
Re: If T is a list of consecutive integers in increasing order  [#permalink]

### Show Tags

Bunuel wrote:
If T is a list of consecutive integers in increasing order, what is the sum of integers in T?

(1) The difference between the last integer in T and the first integer in T is 100. This implies that there are 101 integers in the list. T could be any list of 101 consecutive integers. For example, {0, 1, 2, ..., 100} or {1, 2, 3, ..., 101}. Not sufficient.

(2) The fourth integer in T is -6. This implies that the first integer is -9. We don't know how many integers are there in the list, hence cannot get the sum. Not sufficient.

(1)+(2) We know that the first integer is -9 and that there are total of 101 integers in the list: T = {-9, -8, -7, -6, ..., 91}. We can get the sum. Sufficient.

Answer: C.

Hope it's clear.

Hi Burnel, why is the first integer -9? Re: If T is a list of consecutive integers in increasing order   [#permalink] 22 May 2019, 10:27
Display posts from previous: Sort by

# If T is a list of consecutive integers in increasing order

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

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

#### MBA Resources  