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

 It is currently 21 Oct 2019, 23:37

### 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

# The positive sequence S1 , S2 , S3…Sn…is defined by Sn = Sn–1 + 5 for

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 58404
The positive sequence S1 , S2 , S3…Sn…is defined by Sn = Sn–1 + 5 for  [#permalink]

### Show Tags

05 Feb 2019, 02:59
00:00

Difficulty:

25% (medium)

Question Stats:

80% (01:10) correct 20% (02:40) wrong based on 20 sessions

### HideShow timer Statistics

The positive sequence S1, S2, S3…Sn…is defined by $$S_n = S_{n–1} + 5$$ for n ≥ 2. If $$S_1 = 7$$ then the nth term in the sequence is

A. 5n − 5
B. 5n − 2
C. 5n
D. 5n + 2
E. 5n + 7

_________________
Director
Joined: 09 Mar 2018
Posts: 994
Location: India
The positive sequence S1 , S2 , S3…Sn…is defined by Sn = Sn–1 + 5 for  [#permalink]

### Show Tags

05 Feb 2019, 03:06
Bunuel wrote:
The positive sequence S1, S2, S3…Sn…is defined by $$S_n = S_{n–1} + 5$$ for n ≥ 2. If $$S_1 = 7$$ then the nth term in the sequence is

A. 5n − 5
B. 5n − 2
C. 5n
D. 5n + 2
E. 5n + 7

IMO D

Each term is getting increased by 5

$$S_1 = 7$$
$$S_2 = 12$$
$$S_3 = 17$$

$$S_n = 5n+2$$

n=1 , 7
n=2, 12
_________________
If you notice any discrepancy in my reasoning, please let me know. Lets improve together.

Quote which i can relate to.
Many of life's failures happen with people who do not realize how close they were to success when they gave up.
GMAT Club Legend
Joined: 18 Aug 2017
Posts: 5027
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
Re: The positive sequence S1 , S2 , S3…Sn…is defined by Sn = Sn–1 + 5 for  [#permalink]

### Show Tags

05 Feb 2019, 04:59
Bunuel wrote:
The positive sequence S1, S2, S3…Sn…is defined by $$S_n = S_{n–1} + 5$$ for n ≥ 2. If $$S_1 = 7$$ then the nth term in the sequence is

A. 5n − 5
B. 5n − 2
C. 5n
D. 5n + 2
E. 5n + 7

s1=7
s2=12
s3=17
5n+2 sufficient
IMO D
Re: The positive sequence S1 , S2 , S3…Sn…is defined by Sn = Sn–1 + 5 for   [#permalink] 05 Feb 2019, 04:59
Display posts from previous: Sort by