The 7th term from the end of the sequence -8, -5, -2, ......... , 88 is :

Correct option is B

Given:

Sequence: −8,−5,−2,…,88

Formula Used:

If first term a, common difference d, last term l, then $$n^{th}$$ term

​$$n^{th}$$​ term from end = l − (n − 1) d

Solution:

First term a = −8

Common difference d = -5 - (-8) = 3

Last term l = 88

n = 7

Substituting in formula:

​$$\text{7}^{th}$$​ term from end = $$88 - (7-1) \times 3 = 88 - 6 \times 3 = 88 - 18 = 70$$​