BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

GPREP (Sequences)

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
Legendary Member
Posts: 829
Joined: Mon Jul 07, 2008 10:09 pm
Location: INDIA
Thanked: 84 times
Followed by:3 members

by sudhir3127 » Mon Jul 28, 2008 3:00 am
Please search before posting .. Use this link .. Answer is 10.

https://www.beatthegmat.com/gmat-prep-ar ... t8798.html
Top
Master | Next Rank: 500 Posts
Posts: 118
Joined: Sun Jun 01, 2008 1:47 pm
Thanked: 5 times
Followed by:1 members

by ricky » Mon Jul 28, 2008 3:08 am
IMO C...
Top
Master | Next Rank: 500 Posts
Posts: 167
Joined: Wed Jun 11, 2008 10:58 pm
Thanked: 2 times
Followed by:1 members

by zagcollins » Tue Jul 29, 2008 3:21 am
didnt understand the explanation posted by camitava, can sum1 pls shed further light on this problem?
Top
Legendary Member
Posts: 829
Joined: Mon Jul 07, 2008 10:09 pm
Location: INDIA
Thanked: 84 times
Followed by:3 members

by sudhir3127 » Tue Jul 29, 2008 6:12 am
In the arithmetic sequence t1,t2,t3,tn....t1=23 and tn=tn-1 -3 for each n>1. What is the value of n when tn=-4

Tn= a+ (n-1)d ( nth term formula)

23=-4 + (n-1)3

27= (n-1)*3
9 = n-1
n= 10..

Hope its clear...


P.S.. My 200th post :)
Top
Master | Next Rank: 500 Posts
Posts: 167
Joined: Wed Jun 11, 2008 10:58 pm
Thanked: 2 times
Followed by:1 members

by zagcollins » Tue Jul 29, 2008 9:32 am
really bad@ sequence probs.....get the explanation now, sudhir...thanks!
Top
Post new topic Post Reply
• Page 1 of 1