Question

Find the eleventh term from the last term of the AP:
27, 23, 19, ..., –65.

Answer 1

Let last term be l
and common difference be d

l :- ( - 65 )

d :- ( - 4 )

n :- 11

To find last term :-

Tn :- l - ( n - 1 )d

:- ( - 65 ) - 10 × ( - 4 )


:- ( - 65 ) + 40

:- ( - 25 )

Answer 2

Find the eleventh term from the last term of the AP:
27, 23, 19, ..., –65.