Question

in Ap 21,18, 15, find common difference​

Answer 1

Step-by-step explanation:

We have

AP = 21,18,15

Common difference = T2-T1= 18-21=-3

Answer 2

SOLUTION:

Given:

In A.P. 21,18,15,

Therefore,

Common difference,(d)= 18-21

=) -3

Hope it helps ☺️