Data and charts · Usually met around P3
Chance and probability
From “Certain, possible, impossible” to “Fair and unfair games”, step by step, each skill with its methods, worked examples and answers.
Skills in this topic, easy to hard
- Certain, possible, impossibleAll of them: certain. None: impossible. Some: possible
- Probability: more or less likelyCount them: more is more likely, the same is equally likely
- Listing all the outcomesFix the first, then pair it with each of the second
- Probability as a fractionWanted ÷ all
- Experiments and their resultsTally in fives; more tries come closer to expected
- Fair and unfair gamesCount each player's winning outcomes: equal is fair
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