Question

Find fourth term from term from the end in an a.P -11,-8,-5......49

Answer 1

the 4th term from last is (n-r+1)th term from start so

49= -11+(n-1)3

63=3n

n=21

r=4

so term is 18 so 18th term is

=-11+(18-1)3

=40

Hope it helps you!

Answer 2

hey frnd.....
Given AP = -11,-8,-5.......49
now, we have to find 4th term from last
so a= 49
d = -5-(-8)
= 3
so 4th term from last
= a - 3d
= 49 - 3(3)
= 49 - 9
= 40
so fouth term from last is 40

HOPE THIS HELP YOU ☺☺☺☺