Answer:
The first term is

The fourth term is
.
The tenth term is

Explanation:
Given : Arithmetic sequence

To find : The first, fourth, and tenth terms of the arithmetic sequence described by the given rule?
Solution :
Arithmetic sequence

Substitute, n=1,4,10 to find the given terms
Put n=1,



The first term is

Put n=4,




The fourth term is
.
Put n=10,




The tenth term is
