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If 9th term of an ap …

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If 9th term of an ap is zero prove that 29 term is twice of the 19th term

Posted by Tushar . 5 years ago

Gaurav Seth 5 years ago

Let the first term of an A.P. = a

And common difference = d

Given: 9^th term of an A.P. is 0. Therefore,

We have to prove that

Thus,

And

From equation (2) and (3),

Hence provedc

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