Question

In an AP, if d = –4, n = 7, an = 4, then a is (A) 6 (B) 7 (C) 20 (D) 28

Answer 1

here is your answer..

Answer 2

Answer:

(D) 28

Step-by-step explanation:

In an AP,

a_n = a + (n - 1)d

=> 4 = a + (7 - 1) (-4)

=> 4 = a + 6(-4)

=> 4 + 24 = a

Therefore, a = 28