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


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