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

 It is currently 14 Sep 2014, 18:18

### 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

# Maths3

Author Message
TAGS:
Manager
Joined: 28 Apr 2003
Posts: 95
Location: Singapore
Followers: 1

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

Maths3 [#permalink]  10 Aug 2003, 09:02
I have forgotton basic Maths.

Could anyone enlighten on the formula for nth term
as attached?

[/code]
GMAT Instructor
Joined: 07 Jul 2003
Posts: 771
Location: New York NY 10024
Schools: Haas, MFE; Anderson, MBA; USC, MSEE
Followers: 9

Kudos [?]: 30 [0], given: 0

Don't use a formula. Look at what a2 and a3 are. Maybe a4. Generalize for n.
_________________

Best,

AkamaiBrah
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993

Manager
Joined: 28 Apr 2003
Posts: 95
Location: Singapore
Followers: 1

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

I remember I did it in "Sec. 3" when I was 15 years.
I had not done this arithmetic maths since then.

If n = 1, a2 = a1+4 = 5
If n = 2. a3 = a2+4 = 9
If n = 3, a4 = a3+4 = 13
If n = n, an+1 = an+4 = ?

Manager
Joined: 10 Jun 2003
Posts: 213
Location: Maryland
Followers: 2

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

4n-3 [#permalink]  18 Aug 2003, 09:00
looks like (4n - 3) to me.
Manager
Joined: 28 Apr 2003
Posts: 95
Location: Singapore
Followers: 1

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

Intern
Joined: 11 Jul 2003
Posts: 5
Location: USA
Followers: 0

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

Here is the solution

Arithematic Progression
an=a+(n-1)d

Here a=1 and d=4 substitute the values in the equation to get the answer which is 4n-3
SVP
Joined: 30 Oct 2003
Posts: 1798
Location: NewJersey USA
Followers: 4

Kudos [?]: 34 [0], given: 0

I believe it should be 4n+1
Manager
Joined: 26 Dec 2003
Posts: 227
Location: India
Followers: 1

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

a1=1, a2=5, a3=9,........ so an= 4n-3
SVP
Joined: 30 Oct 2003
Posts: 1798
Location: NewJersey USA
Followers: 4

Kudos [?]: 34 [0], given: 0

It should be 4n-3

if n = 0 then 4n+1 yeilds 1 which is incorrect
if n = 1 then 4n-3 yeilds 1
Similar topics Replies Last post
Similar
Topics:
a GWD math (3) , pls tell me where you get value of R 2 20 Aug 2011, 03:29
29 Math : 3-D Geometries 14 01 Oct 2010, 17:18
4 In how many different ways can 4 physics, 2 math and 3 9 11 Nov 2007, 03:37
The probability that a student will pass in Math is 3/5 and 6 16 Jun 2005, 08:56
Display posts from previous: Sort by