Question

In an A.P. an = 3n +2 then find the 12th term.​

Answer 1

Answer:

let put n-12

then,

it is 3×12+2-38

Step-by-step explanation:

so ans is 38

hope it helps

Answer 2

Given:

$a_n$ = 3n + 2

We have to find, the 12th term of an A.P. ($a_{12}$) = ?

Solution:

∴ $a_n$ = 3n + 2

Put n = 1, 2, 3, 4, 5 ......., n

The 1st term of an A.P. ,

$a_{1}$ = 3(1) + 2

= 3 + 2 = 5

The 2nd term of an A.P. ,

$a_{2}$ = 3(2) + 2

= 6 + 2 = 8

.........

The 12th term of an A.P. ,

$a_{12}$ = 3(12) + 2

= 36 + 2 = 38

∴ The 12th term of an A.P. ($a_{12}$) = 38

Thus, the 12th term of an A.P. ($a_{12}$) = 38