Probability

Probability

Secondary 4

A fair coin is tossed three times independently.

  1. Draw a complete tree diagram and list all eight sequences.

Find the probability of obtaining:

  1. exactly two heads;

  2. at least one head;

  3. the same result on all three tosses.

Solution:

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Answer:(a) See tree; (b) \(\frac38\); (c) \(\frac78\); (d) \(\frac14\)

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