## The 6th term of an AP is – 10 and 10th term is -26. Determine the sum of the first 20 terms of the AP .

Question

The 6th term of an AP is – 10 and 10th term is -26. Determine the sum of the first 20 terms of the AP .

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2 weeks 2021-10-14T11:44:56+00:00 2 Answers 0 views 0

## Answers ( )

1. Let a be the First term of the AP

Common Difference = d

So

Now Equation (1) Equation (2) gives

From Equation (1)

### Hence the sum of first 20 terms

2. Answer:

-560 is answer dear friend