Question

In A.P 21,18,15..then 23rd term is. 87 2. 45 3. -21 4. -45​

Answer 1

Answer:

What is question, I can't understand

Answer 2

first term=21

common difference =18-21= -3

23rd term= first term+22d

=21+22*-3

=21+(-66)

=21-66

=-45