Standard Level
7.01 Conditional probability and independent events
Interactive practice questions
A number game uses a basket with $6$6 balls, all labelled with numbers from $1$1 to $6$6. $2$2 balls are drawn at random.
a
What is the probability that the ball labelled $3$3 is picked once if the balls are drawn with replacement?
b
What is the probability that the ball labelled $3$3 is picked once if the balls are drawn without replacement?
Easy
4min
A standard deck of cards is used and $3$3 cards are drawn out.
Easy
3min
A number game uses a basket with $9$9 balls, all labelled with numbers from $1$1 to $9$9. $3$3 balls are drawn at random, without replacement.
Easy
6min
A pile of playing cards has $4$4 diamonds and $3$3 hearts. A second pile has $2$2 diamonds and $5$5 hearts. One card is selected at random from the first pile, then the second.
Easy
2min
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