Question

the set of first four terms of the arithmetic ​

Answer 1

Answer:

Such sequences can be expressed in terms of the nth term of the sequence. In this case, the nth term = 2n. To find the 1st term, put n = 1 into the formula, to find the 4th term, replace the n's by 4's: 4th term = 2 × 4 = 8.

Answer 2

the term is given 3n+2 so for the first term this is when n=1. so we substitute 1 as n and do similar thing for 2nd and 3rd term