Conditional Probability and Independence
10 tutor-authored questions for this Ontario curriculum expectation, ordered easiest to hardest — every one with a full worked solution. Work through them free, no account needed.
Sample: the first question, solved
A bag has 5 red and 5 blue marbles. A red marble is drawn first (not replaced). Find the probability the second marble drawn is also red.
📘 Worked solution
✓4/9.
And one from the hard end
Explain what it means for two events to be "independent."
Solution shown after you try it in practice mode.
Work through all 10, easiest to hardest
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