Question

What is the sum of the first eight terms of a geometric series whose first term is 3 and whose common ratio is 1/2?

Answer 1

Answer:

Step-by-step explanation:

a=3

r=1/2=0.5   i.e. r<1 so the formula for sum  will be

S8= a(1-r^n)/1-r

    =3(1-(1/2)^8/1-1/2

     and solve it further.......