How many terms are there in the sequence `3,6,9, 12 , 111 ?`

Explanation

The given sequence is an A.P. with first term a=3 and common difference d=3. Let there be n terms in the given sequence. Then,

`n^(th)` term`=111`

`a+(n−1)d=111`

`3+(n−1)×3=111`

`n=37`

Thus, the given sequence contains 37 terms.