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@simonfruendt If there are 11 numbers then it seems the first one is the international country code. So the overall format would be something like

Where _ is the international code for the USA, eg. 1. Does that make sense?


@jr0cket I have done a solution yesterday but haven't submitted it yet. There I assumed a format like _ (optional but must be 1) (XXX)-XXX-XXXX. This passed the test. I will bring up the issue there directly.


Work is being done to improve the descriptions on all the exercises, so any feedback from students is most welcome. Thank you.