Math, asked by palgandhi1045, 6 months ago

The sum of the 5th and the 7th terms of an AP is 40 and their product is 391. Find the

value of the common difference.

Answers

Answered by parul291105

0

Let the first term be a and common difference is d,

a+(7−1)d=40

a+6d=40

Now sum of 13 term is

2

13

(2a+12d)=

2

13

.2.40=520

Answered by abhimanyukorant

0

Answer:

ok i have proof

Step-by-step explanation:

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