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When fractions are expressed in different bases, they can be terminating or repeating. For example, when $\frac{1}{5}$ is expressed in base $3,$ the result is
0.\overline{0121}_3 = 0.01210121 \dots,
which is repeating.
 

When $\frac{1}{288}$ is expressed in base $13,$ is it terminating or repeating?

 Jul 18, 2024
 #1
avatar+1892 
+1

First, let's convert 1/288 into base 13. 

Since 1 is the smae in every base, and we have

\((192)_{13} = (1 × 13^2) + (9 × 13^1) + (2 × 13^0) = (288)_{10}\)

This means that

\(\frac{1}{192}_{13} = \frac{1}{288}_{10}\)

 

Now, we complete base division. The answer is approximately 

\(0.0078229A44BC67118933...\)

 

I don't think the number is repeating, although I am not sure. 

If I had to geuss with the first 20 digits, it isn't repeating, but maybe it is. 

 

Thanks! :)

 Jul 18, 2024
edited by NotThatSmart  Jul 18, 2024

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