Question

4. How many terms of the AP: 9, 17, 25, ... must be taken to give a sum of 636?​

Answer 1

Number of terms of the AP [ 9 , 17 , 25 ] which are required to make the sum of 636 is 12.

Answer 2

Answer:

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Given Ap

9, 17, 25

a = 9, d = 8 an =636 n =?

To find the terms of the Ap

an = a+(n-1)d

636 = 9+(n-1)8

636-9 = (n-1)8

627 = (n-1)8

(n-1) = 627 / 8

636 is not a term of the ap