Use "impossible," "possible," and "certain" to describe likelihood of complementary events, and use likelihood to make predictions
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 4 blue marbles and 0 red marbles. Is it certain, possible, or impossible to draw a red marble?
📘 Worked solution
✓Impossible.
And one from the hard end
A spinner is half red, half blue. Is it possible to land on red? Is it certain?
Solution shown after you try it in practice mode.
Work through all 10, easiest to hardest
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