Question

find 10th term from the end of the ap 4,9,14,....254

Answer 1

n = 10
l = 254
d = 5

ATQ

10th term from end = l - (n - 1)d
= 254 - 45 = 209

Answer 2

QUESTION : Find the 10th term from the end term of the AP 4,9,14,...,254

ANSWER :

Let a = 254

Then, d = 9 - 4

             = -5

According  To Question

a10 = 254 + ( 10 - 1)- 5    [ Formula used : an = a + ( n - 1 )d ]

      = 254 + ( 9 )- 5

      = 254 + ( -45 )

      = 254 - 45

      = 209