Question

The first and last trm of an AP are 5and 45respectively if the sum of all.its term is 400 find commem difference with explanation

Answer 1

Answer:

Step-by-step explanation:

N= 400/25

=16

No tr3ms are 16

T16=45

a+15d=45

5+15×d=45

15d=40

d=8/3

=2.66

Difference is 2.66