Question

Find the 4th term from the end of an AP: -11,-8,-5.......49

Answer 1

EXPLANATION.

• GIVEN

Series of Ap = -11,-8,-5,......49

TO FIND 4TH TERM FROM THE END OF AP.

Let the new series be =

49,46,43,40,.....

Let the first term = a = 49

common difference = d = b - a

46 - 49 = -3

Let nth term of an Ap is

An = a + ( n - 1 ) d

4th term =

T4 = a + ( 4 - 1 ) d

T4 = a + 3d

T4 = 49 + 3(-3)

T4 = 49 - 9

T4 = 40

Therefore,

4th term of an Ap = 40