Eric Nicholas K's answer to Ka Yee Tang's question.

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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
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A tree diagram may help here, but it is not necessary.

For part (c), there are three ways for the person to not get the certification.

1. Pass the theory test on first try but fail the three upcoming practical tests.

2. Pass the theory test on second try but fail the three upcoming practical tests.

3. Failed both theory tests.