Question 165

Find two repeater machines that will do the same work as a $(\times 81)$ machine.

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Solution

Two repeater machines that do the same work as $(\times 81)$ are $(\times 3^{4})$ and $(\times 9^{2})$ .

Since, 3 and 9 arefactors of 81 .
$81 = 3 \times 3 \times 3 \times 3$

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