Question

What is the 30th term of the sequence 1, 7, 13, 19?

Answer 1

`175`

Explanation:

As a term of the sequence has constant difference with preceeding term, (`19-13=13-7=7-1=6`), this is an arithmetic sequence with first term as `1` and constant difference as `d`.

As the `n^(th)` of such a series is given by `a+(n-1)d)` where `n` is 30 i.e.

`1+29*6)`

or `175`