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If 9 times the 9th term of an AP is equa...

If 9 times the 9th term of an AP is equal to 13 times the 13th term, show that its 22 nd term is 0.

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To solve the problem, we will follow these steps: ### Step 1: Understand the terms of the Arithmetic Progression (AP) In an AP, the nth term can be expressed as: \[ T_n = A + (n-1)D \] where \( A \) is the first term and \( D \) is the common difference. ### Step 2: Write the expressions for the 9th and 13th terms ...
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