Answer: Given series is 1,5,9,13,17,… Common difference (d)=5−1=4 First term is a=1 So n th term is t n =a+(n−1)d=1+(n−1)4=4n−3 ∴t n =4n−3 Reply

Answer:Given series is 1,5,9,13,17,…

Common difference (d)=5−1=4

First term is a=1

So n

th

term is t

n

=a+(n−1)d=1+(n−1)4=4n−3

∴t

n

=4n−3