If (m+1)th term of A.P. is twice the (n+1)th term . Then show that (3m+1)th term is twice the (m+n+1)th term.

I'm confused with this one. No idea how to do this. Any help wpuld be appriciated.

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- September 12th 2009, 11:39 PMamanA.P.
If (m+1)th term of A.P. is twice the (n+1)th term . Then show that (3m+1)th term is twice the (m+n+1)th term.

I'm confused with this one. No idea how to do this. Any help wpuld be appriciated. - September 13th 2009, 12:09 AMCaptainBlack
- September 13th 2009, 12:23 AMpsparmaranswer(AP)