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Q.The sum of the third and the seventh terms of an A.P. is 6 and their product is 8.Find the sum of first sixteen terms of the A.P.

Q.The sum of the third and the seventh terms of an A.P. is 6 and their product is 8.Find the sum of first sixteen terms of the A.P.

Grade:11

1 Answers

Mathematics Expert - askIITians
askIITians Faculty 44 Points
6 years ago
Third tem of AP

Seventh term

Given

And

Substitute the value of in terms of d.

Therefore,

Calculate the sum of first 16 terms.

Hence, possible answers are 76 and 20.


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