Question

${30}^{th}$ term of the AP: 10,7,4,..., is

• A. 97
• B. 77
• C. -77
• D. -87

Answer 1

The correct option is C

-77

10, 7, 4...

First term = a =10

Common difference = d = 7- 10 = 4-7 = -3

n = 30 {because, we need to find 30th term}

$a_n$=a+ (n−1) d

$a_{30}$=10+ (30−1) (−3) =10−87 = −77