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Standard X

Mathematics

nth Term of an AP

The sum of th...

Question

The sum of the 2nd and the 7th terms of an AP is 30. If its 15th term is 1 less than twice its 8th term, find the AP.

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Solution

Letthefirsttermaandcommondifferencebed and nth term be $a_{n}$ .

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The sum of the 2nd and the 7th terms of an AP is 30. If its 15th term is 1 less than twice its 8th term, find the AP.

Letthefirsttermaandcommondifferencebed and nth term be an.

Letthefirsttermaandcommondifferencebed and nth term be $a_{n}$ .