I have an infinite number of dials with red needles that rotate $n\in\mathbb{Z^+}$ times every second. They all start pointing North.
Will they simultaneously all point North ever again?
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$\begingroup$ Obviously should have been answered by @North :) $\endgroup$ – Brandon_J Mar 23 at 19:13
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Answer
Yes, after one second, since each $n \in \mathbb{Z}$
