Results 1 to 6 of 6

- April 2nd 2009, 08:16 AM #1

- Joined
- Jul 2008
- Posts
- 26

- April 2nd 2009, 08:35 AM #2

- Joined
- Apr 2005
- Posts
- 17,939
- Thanks
- 2334

- April 2nd 2009, 09:06 AM #3

- Joined
- Jul 2008
- Posts
- 26

- April 2nd 2009, 10:04 AM #4

- Joined
- May 2006
- From
- Lexington, MA (USA)
- Posts
- 12,026
- Thanks
- 845

Hello, cnpranav!

If are in A.P. where

then find the value of: .

. . . . .

. . . . .

. . . . . . . . . . . . . . . . . . . . . . . .

. .

Since are in A.P.,

. . all the denominators are the common difference,

We have: .

. . which simplifies to: .

- April 2nd 2009, 10:14 AM #5

- Joined
- Jul 2008
- Posts
- 26

- April 2nd 2009, 10:32 AM #6

- Joined
- Jul 2008
- Posts
- 26