Question

How many tearm are there in the AP 41,38,35...........,8?

Answer 1

an=a+(n-d)

8=41+(n-3)

8-41=(n-3)

-33=(n-3)

-33+3=n

-30=n

Answer 2

The Formula is:

l = a+ (n-1) d

8= 41 + (n-1) -3

8= 41 -3n + 3

8 - 44 = -3n

-36 = -3n

n = -36/-3

n = 12.