Question

Find the 8th term from the end of the AP = 7 , 10, 13, ..., 184.

Answer 1

Given
a = 7, d = (10 - 7) = 3, l = 184 and n=8

nth term from the end = $(l-(n-1\left)d\right)=(184-(8-1\left)3\right)$

= (184 - 7 $\times$ 3)

= 184 - 21

= 163

Hence, the 8th term from the end is 163.