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In a certain A.P., 5 times the 5th term ...

In a certain A.P., 5 times the 5th term is equal to 8 times the 8th term. Then prove that its 13th term is 0.

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To solve the problem step by step, we start with the information given in the question. ### Step 1: Understand the terms in an Arithmetic Progression (A.P.) In an A.P., the nth term \( T_n \) can be expressed as: \[ T_n = a + (n - 1)d \] where \( a \) is the first term and \( d \) is the common difference. ...
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