Find the 8th term from the end of the A.P.
a = 7, d = 3
Last term, an = 184
an = a + (n – 1) d
184 = 7 + (n - 1) 3
184 = 7 + 3n – 3
180 = 3n
n = 60
Now we have to find last 8th term, it means = 60th – 7 = 53rd term
a53 = 7 + (53 – 1)3
= 7 + 52 * 3
= 7 + 156 = 163
Hence, 8th term from the end of given is 163