Use "impossible," "possible," and "certain" to describe likelihood of complementary events, and use likelihood to make predictions
30 tutor-authored questions for this Ontario curriculum expectation, ordered easiest to hardest, every one with a full worked solution. Work through all 30, included free with your weekly lessons.
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 forecast says there's a "possible" chance of snow. Using complementary event reasoning, explain why "no snow" must also be possible, and why neither outcome is "certain" or "impossible."
Solution shown after you try it in practice mode.
Work through all 30, easiest to hardest
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