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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.¯01213=0.01210121,
which is repeating.

 

When $\frac{1}{288}$ is expressed in base $19,$ is it terminating or repeating?

 Jun 24, 2024
 #1
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First, let's convert the numbers in to base 19. 

We have

(F3)19=(15×191)+(3×190)=(288)10

 

This means that 128810=1F319

 

Doing some base division, we have

1F319=¯0.014F9AE6

 

Thus, it is a repeating decimal. 

 

So our answer is repeating. 

 

Thanks! :)

 Jun 24, 2024

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