Practice probability online for free. Suitable for grade 11. No ads.
Example problems
3 coins. Chance of at least one heads (in %)?
2 coins. Chance both heads (in %)?
5 balls: 1 blue. Chance to draw blue (in %)?
4 balls: 1 red. Chance to draw red (in %)?
Cards 1–10. Chance of drawing an even (in %)?