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Mathematics of Chance
Mathematics · Kerala SSLC (Class 10) · English Medium · 40 questions and answers
Sample questions
- Q: What does 'equally likely' mean?
- A: Each outcome has the same chance of happening. A fair die and a fair coin give equally likely outcomes.
- Q: Common mistake: giving probability greater than 1.
- A: A probability can never exceed 1 or be negative. If your answer is more than 1, you have miscounted the outcomes.
- Q: Common mistake: when one slip is drawn from each of two boxes, (1, 2) and (2, 1) are counted as the same outcome. Why is that wrong?
- A: (1 from box 1, 2 from box 2) and (2 from box 1, 1 from box 2) are different draws. List ordered pairs: (first box, second box).
- Q: What is probability?
- A: A number between 0 and 1 that measures how likely an event is. 0 means impossible and 1 means certain.
- Q: What is the basic probability formula?
- A: P(\text{event}) = \frac{\text{number of favourable outcomes}}{\text{total number of outcomes}}, assuming all outcomes are equally likely.
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