1 Answer

JasonStoltz · Answer 1 · 2017-01-16T04:00:17+0000

We can determine is a ratio = (2/5)/2=1/5. Also we can use a formula for this:

∑
(1)/(5^k) = (1)/(1- (1)/(5) )

And in that way you wil find that it is the 4 term

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