Question

Find the elevent term the last term of the AP 27, 23, 19, .......,-65.

Answer 1

nth term= a+(n-1)d

d=23-27= -4

a=27

27+(11-1)-4

=27+(-40)

=-13

eleventh term =-13

Answer 2

a=27
d=-5
L= -65
Reverse the ap to get the 11th term from last
Therefore a= -65
d= 5
L= 27
a11= a+(n-1)d
= -65+(11-1)5
= -65+(10)5
=-65+50
a11=-15