Question

Find the sum of 20 terms of parallel series of 0,4,8,12​

Answer 1

Answer:

760

Step-by-step explanation:

S(n) -> Sum of n terms:

S(n) = n/2 [2a+(n-1) d]

here n=20

a=0

d=4

S(20) = 20/2 [2(0)+ (20-1)×4]

= 10× (19×4)

= 760