alleryIn set notation, the event 'A occurs but B does not occur' is written as:
AA union B as a whole
BB minus the whole set A
CA intersect B-complement
DThe complement of A union B
Answer & Solution
Correct answer: C. A intersect B-complement
1. A must occur, so we stay inside the set A.
2. B must fail, so we intersect with the complement of B.
3. The event is A intersect B', often written A minus B.
_Source: syllabus Mathematics, Ch 14 'Probability' (kemh114)_
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