Question

Find the 15th term of the AP: 11, 9, 7,....​

Answer 1

Answer:

11

9

7

5

3

1

-1

-3

-5

-7

-9

-11

-13

-15

-17

15th term of the ap is -17

Answer 2

d=a2-a1

=9-11

=-2

an=a+(n-1)d

a15=11+(15-1)-2

=11+(14)-2

=11-28

= -17

Therefore, 15th term of an AP is -17