Question

if S29 =14500then find t15​

Answer 1

Step-by-step explanation:

Correct option is

A

74

We have,

a= First term =4

d= Common difference =5

We know that the n

th

term of an A.P. with first term a and common difference d is given by

t

n

=a+(n−1)d

t

15

=a+(15−1)d

=4+(14)5

=4+70

t

15

=74