Question

If a = 2 and d = 4, then S₂₀ = ......,select a proper option (a), (b), (c) or (d) from given options so that the statement becomes correct.(All the problems refer to A.P.)
(a) 600
(b) 800
(c) 78
(d) 80

Answer 1

Step-by-step explanation:

option b is correct answer