If you're lucky enough to stumble across a problem that you're very familiar with, I'd say you can still use it as an exercise to show how good you are at communicating. You may not need to think much in order to find the answer, but you still have to explain the overall shape of that answer, as well as what each specific step is for.
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If you're lucky enough to stumble across a problem that you're very familiar with, I'd say you can still use it as an exercise to show how good you are at communicating. You may not need to think much in order to find the answer, but you still have to explain the overall shape of that answer, as well as what each specific step is for.