Play & learn / Probability lab
Probability Parlay
Two dice. Three coins. A fresh deck of cards. Explore chance with 1,000 imaginary credits and see the whole round unfold.
Runs in your browser. No account, real money, or network connection needed after loading.
How it works
Enter wagers in credits, down to 0.01. A winning wager returns your stake plus the listed profit multiplier. For example, 10 credits at ×2.50 returns 35 credits. Each winning profit is rounded to the nearest cent.
Dice and coins are independent and fair. Three cards are drawn without replacement from a new 52-card deck each round. J, Q and K have value 10; A has value 11. “Face cards” means J, Q or K, excluding 10. All displayed probabilities are calculated from these rules.
The two sum predictions pay ×1 profit, with no refund for equality. Other payouts are below fair odds. Different wagers on the same outcome can be correlated; a higher win probability does not guarantee growth. This is a probability toy, not a strategy guide.
Dice roll
Two six-sided dice
| Outcome / chance | Profit | Wager |
|---|
Coin flip
Three independent flips
| Outcome / chance | Profit | Wager |
|---|
Card draw
Product of the first two card values
| Outcome / chance | Profit | Wager |
|---|
Three-card sum predictions · ×1 profit
| Outcome / chance | Profit | Wager |
|---|
Round reveal
Place a wager to reveal this round.