If \( m \) times the \( m \) th term of an A.P. is equal to \( n \) times the \( n \)th term, sh...

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If \( m \) times the \( m \) th term of an A.P. is equal to \( n \) times the \( n \)th term, show that \( (m+n) \) th term is zero.
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