Question

Which term of the Ap: 9,8,13,18.......is 79?

Please don't post invalid answer..!!​

Answer 1

`a {}^(n) = 79`

`n = ?`

`a = 3`

`79 = 3 + (n - 1) * 5`

`76 = 5n - 5 \\ 81 = 5n \\ n = 16.2`

16.2 is the answer