1. Find the 20’th term of the arithmatic sequence in which the first term (a1) =5 and d=4 n=20
(a1) is the first term and the difference between any two adjacent terms is 4
use the formula an= a1 +(n-1)(d)
= 5+(19)(4)
=81
2. Find the sixth term of the geometric sequence in which a1 is 5 and r=3
an=a1(r^n-1)
a6=5(3^5)
a6=5(243)
a6=1215
