Find: `10 t h` term of the A.P. 1,4,7,10..

Explanation

We know `n ^(th) ` term of an AP with first term ′ a ′ common difference ′ d ′
is `a_n =a+(n−1)d`


In given AP:`1,4,7`

`a=1,d=3`

So `10^(th)`term `=a+9d`

`=1+27`

`=28`