Question

Write the 15th term of Arithmetic Progression 5, 9, 13, ......

Answer 1

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