Just tell them it’s familiar. Depends on the company, but they can often tell. If you blast through a tough question and then struggle on easier ones, it’ll sho

Just tell them it’s familiar. Depends on the company, but they can often tell. If you blast through a tough question and then struggle on easier ones, it’ll show up in hiring committee (or equivalent). It could easily cost you the offer if they think you’re being dishonest. If you say it’s familiar and they ask you to do it anyway, just solve it very quickly and thoroughly. They’ll give you points for your performance and probably ask you another.