23. Probability
iGCSE (2021 Edition)
23.07 Two-step experiments
Interactive practice questions
A standard six-sided die is rolled twice. Find the probability of:
a
rolling a $3$3 and a $6$6 in any order.
b
rolling a $3$3 and then a $6$6
Easy
2min
Five ordinary dice are rolled. What is the probability that the results are all less than $5$5?
Easy
2min
Mr and Mrs Smith are starting a family.
When having each child, they assume that having a girl is just as likely as having a boy.
Medium
2min
Neville has found that when playing chess against the computer, he wins $\frac{1}{3}$13 of the time.
Medium
5min
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