Question

In an AP th le first term is -2 and the last term is -29 and sum of all terms is -155.Find 11th term of the ap

Answer 1

Answer:

-32

Step-by-step explanation:

a= -2

l= -29

S= n/2(a+l)

-155= n/2 (-2-29)

-155=n/2 * -31

n/2= -155/-31= 5

n=10

a+9d= -29

-2+9d=-29

9d=-27

d=-3

11th term = a+ 10d

= -2 (-3*10)

=-2 - 30

=-32

Answer 2

Hope it helps........