Determine the 10th term from the end of the A.P. 4, 9, 14, ........, 254.
200
205
209
214
We have,
l = Last term = 254 and,
d = Common difference = 5,
10th term from the end =l–(10–1)d
=l–9d
=254–9×5
=209
Find the 10th term from the end of the A. P. 4,9,14,........... , 254.