Practice probability online for free. Suitable for grade 11. No ads.
Example problems
2 coins. Chance both heads (in %)?
Coin. Chance of heads (in %)?
Die 1–6. Chance of rolling > 4 (in %)?
5 balls: 1 blue. Chance to draw blue (in %)?
4 balls: 1 red. Chance to draw red (in %)?