Blackjack table

Standing on 17 against a dealer 7 is the correct basic strategy play, as hitting risks busting with little chance of improving to a winning hand.

Standing on 17 against a dealer 5 is the correct basic strategy play since the dealer is likely to bust with a weak upcard.

Standing on 20 against a dealer Ten is the correct basic-strategy play; hitting risks busting with little gain, and doubling is not advisable here.

Standing on 16 against a dealer 6 is the basic-strategy play; doubling a hard 16 is too risky and hitting risks busting.

Standing on 12 vs dealer 9 is a losing play; hitting gives a chance to improve to 17+ while the bust risk is acceptable compared to the high chance of dealer making a strong hand.

Hard 11 vs dealer 4 is a strong double-down spot; doubling maximizes expected value when the dealer is weak and we have a high chance of drawing a 10-value card.

Standing on 15 against a dealer 4 is the correct basic strategy play, as the dealer is in a weak position and hitting risks busting with a high probability.

Standing on 15 against a dealer 3 is the mathematically correct basic strategy play, as hitting risks busting with a high probability of drawing a 6 or higher.

Dealer shows a 5, which is weak, so I want to improve my 13 without risking an extra bet. Doubling a hard 13 is too risky, so hitting is the safer play.

Standing on 20 against a dealer 5 is the clear basic-strategy play; hitting risks busting with little upside.

Standing on 20 against a dealer 9 is the correct basic strategy play; hitting risks busting with little chance of improving to beat the dealer's likely total.

Splitting 2-2 against a dealer 2 is the correct basic strategy play; it isolates the weak hand and gives two chances to improve, and DAS is allowed.

Hard 8 against dealer's 2 is a clear hit; doubling a marginal 8 is too risky and standing loses value.

Hand total is 11, which is a strong drawing position; hitting maximizes expected value against the dealer's 2 upcard. Doubling is not allowed on this split hand, so hitting is the optimal play.

My active hand totals 19, which is strong enough against a dealer 2 upcard; hitting risks busting with little gain, so standing is the correct basic-strategy play.

Hard 7 against dealer's 2 is a clear hit; doubling would risk doubling down on a weak total with little advantage.

My hand totals 13 against the dealer's 2. Standing is the correct basic strategy play here, as hitting risks busting with little gain against such a weak upcard.

Standing on 15 against a dealer King avoids the high bust risk of hitting and the marginal EV gain of doubling on a weak 15.

Standing on 12 against an Ace is the correct basic strategy play to avoid busting and let the dealer potentially bust with a weak hole card.

Splitting 4s is mathematically correct against a dealer 9 in a 6-deck game where double after split is allowed; it reduces the risk of busting on a hard 8 and creates two hands that can be doubled on strong cards.

Starting with a hard 8 after splitting 4s, hitting is the correct basic strategy play since standing on 8 is never advisable. The dealer's 9 upcard makes this a weak position, but doubling would risk the entire bet on a poor doubling hand, and splitting is not possible as the hand is already split.

Standing with 18 against the dealer's 9 is the correct basic strategy play, as hitting risks busting with little chance to improve.

Standing on 14 against a dealer 9 is the correct basic strategy play; doubling would risk doubling down on a weak total, and hitting has a high bust probability with little gain.

With a hard 8 against a dealer Queen, doubling is statistically favorable because the dealer's strong upcard makes a 10-value card the most likely card to improve my hand to 18, and I'm paid 2:1 on the doubled bet when I win.

Standing on 12 vs dealer 5 is risky because the dealer is unlikely to bust, and hitting has a positive expected value. Doubling is not worth the risk with a stiff 12.

Standing on 15 against a dealer 5 is the basic-strategy play; hitting risks busting with a high-card-heavy deck.

Standing on 12 vs dealer 2 is risky because the dealer is unlikely to bust and will likely improve; hitting gives a chance to reach a stronger total, and the risk of busting is acceptable compared to the expected loss from standing.

Standing on 18 against a dealer 2 is the correct basic-strategy play; hitting risks busting with little gain.

Standing on 15 against a dealer 3 is the correct basic strategy play; hitting risks busting with a high probability, and doubling is not advisable on a weak total.

Standing on 19 against a dealer 4 is the correct basic strategy play, as the dealer is in a weak position and hitting risks busting.