Question

The 9th term of the A.P. -15 , -11 , -7 , ……….49

Answer 1

Answer:

17

Step-by-step explanation:

Common difference, d = 4

First term, a = -15

n = 9

So, 9th term = a + ( n - 1 ) * d

= -15 + ( 9 - 1 ) * 4

= -15 + 8*4

= -15 + 32

= 17