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Reversed number

Let $$m_r$$ be the reflection of $$m$$. For example, $$1234_r = 4321$$.

The positive integer k has the property,

$$\forall m\in\mathbb{N},k|m \implies k|m_r$$.

Show that, $$k \mid 99$$.

Note by Kalpa Roy
2 weeks, 1 day ago

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- 2 weeks, 1 day ago

Its easy I guess.. will post a soln. I didnt did it with pen and paper. Idk if I am correct becoz i did it in my mind

- 45 minutes ago