Question

Is the sum for the first five terms in a sequence where a_1=3 and r=1/3 1.48?

I did the process of 3*1/3=1

etc...

Answer 1

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

a = 3
r = 1/3
n = 5

Answer 2

http://www.wolframalpha.com/input/?i=3%28%281%2F3%29%5E5-1%29%2F%281%2F3-1%29
bb

Answer 3

Ah so 4.48. Only 3 away from the right answer.. ha

Answer 4

ahh yes... u forgot to add the first term 3 i see :)

Answer 5

Damnit. So close.

Answer 6

happens ;)

Answer 7

everyday yo, everyday