In an A.P., if d = -4, n = 7, an = 4, then a is
A. 6
B. 7
C. 20
D. 28
Answer: Option D
Solution (By Examveda Team)
an = a + (n - 1) × d⇒ 4 = a + (7 - 1) × -4
⇒ 4 = a - 24
⇒ a = 4 + 24
= 28
This Question Belongs to Arithmetic Ability >> Progressions
⇒ 4 = a + (7 - 1) × -4
⇒ 4 = a - 24
⇒ a = 4 + 24
= 28
Related Questions on Progressions
The sum of the first 16 terms of an AP whose first term and third term are 5 and 15 respectively is
A. 600
B. 765
C. 640
D. 680
E. 690
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