Question

find the 11 term from the the last term of ap. 27,23,19,....,-65

Answer 1

In this AP,
a = 27, d= -4, an = -65.

On reversing the order, AP becomes:
-65, -61,..............19,23,27
Here, a= -65, d= 4, an= 27.
Now,
a11= a + (11-1)d
a11 = -65 + 10* 4
       = -65 + 40
       =  -25.
Therefore, the eleventh term from the last is -25.


Hope it helped. Do check my calculations.
NISHTHA.

Answer 2

given that,
last term = l = -65
no. of terms = n= 11
common difference= d = 23-27 = -4

we know that,
nth term from the end = l - (n-1)d
= -65 - (11-1)(-4)
= -65 +40
= -25

HOPE IT HELPS.. FOR QUERIES COMMENT