3-Card vs. Dealer questions

Yes. Play Q-6-4 or better and fold anything lower. The rule is exact: it gives the best decision for every one of the 22,100 hands, on every ante bonus paytable.

Neither. Playing every hand more than doubles what the game costs you, and mimicking the dealer (playing any queen) costs a bit more than Q-6-4. Folding the weakest hands is worth it.

The dealer qualifies with queen-high or better, about seven times in ten. When it doesn’t, your ante wins even money and your play bet comes back, whatever you hold.

Because with three cards a straight is rarer than a flush. Hands rank by how hard they are to get, and three of a kind is rarer still, which is why it beats a straight.

Only on a good paytable. On the common 1/3/6/30/40 table it costs over 7% of every bet; the same table paying 4 to 1 on a flush costs about a third of that. Check the flush payout before you bet.